List of The Flash characters
This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages)(Learn how and when to remove this template message)
The Flash is an American television series developed by writer-producers Greg Berlanti, Andrew Kreisberg and Geoff Johns, and is based on the DC Comics character, the Flash. The series premiered on The CW television network in the United States on October 7, 2014. The series is a spin-off from Arrow, a show set in the same fictional universe.
The first season follows police forensic investigator Barry Allen (Grant Gustin), who develops super-speed after he is struck by lightning. In his attempt to use his powers for good, he is assisted by S.T.A.R. Labs' Dr. Caitlin Snow (Danielle Panabaker), Cisco Ramon (Carlos Valdes), and Dr. Harrison Wells (Tom Cavanagh). Barry tries to solve the murder of his mother by a superhuman attacker (Matt Letscher). The murder investigation unjustly imprisoned his father (John Wesley Shipp), leaving detective Joe West (Jesse L. Martin), father of his best friend, Iris (Candice Patton), to take in the young Barry. The memory of his mother's murder and his father's framing later motivates Barry to put his personal needs aside and use his powers to fight against those who hurt the innocent, thus, shaping him into the Flash.
The following is a list of characters who have appeared in the television series. Many are named after (or based on) DC Comics characters.
|Character||Portrayed by||First appearance||Seasons|
|Barry Allen / Flash||Grant Gustin||"Pilot"||Main[a]|
|Iris West||Candice Patton||Main[b]|
|Caitlin Snow / Killer Frost||Danielle Panabaker||Main[c]|
|Eddie Thawne||Rick Cosnett||Main[d]||Guest||Does not appear|
|Cisco Ramon / Vibe||Carlos Valdes||Main[e]|
|Harrison Wells||Tom Cavanagh||Main[f]|
|Joe West||Jesse L. Martin||Main[g]|
|Wally West / Kid Flash||Keiynan Lonsdale||"Running to Stand Still"||Does not appear||Main[h]||Guest|
|Clifford DeVoe / The Thinker||Neil Sandilands||"The Flash Reborn"||Does not appear||Main[i]||Does not appear|
|Cecille Horton||Danielle Nicolet||"Who Is Harrison Wells?"||Guest||Does not appear||Recurring||Main|
|Ralph Dibny / Elongated Man||Hartley Sawyer||"Elongated Journey Into Night"||Does not appear||Recurring[j]||Main|
|Nora West-Allen / XS||Jessica Parker Kennedy||"The Elongated Knight Rises"||Does not appear||Recurring||Main|
|Cicada||Chris Klein||TBA||Does not appear||Main|
|Nora Allen||Michelle Harrison||"Pilot"||Recurring||Guest||Does not appear|
|David Singh||Patrick Sabongui||Recurring||Guest||Recurring||Does not appear|
|Henry Allen||John Wesley Shipp||Recurring||Guest||Does not appear|
|Jay Garrick / Flash||"The Race of His Life"||Does not appear||Guest||Recurring||Guest||Does not appear|
|Ronnie Raymond / Firestorm||Robbie Amell||"Things You Can't Outrun"||Recurring||Guest||Does not appear|
|Leonard Snart / Captain Cold (Earth-1)||Wentworth Miller||"Going Rogue"||Recurring||Guest||Does not appear|
|Leo Snart (Earth-X)||"Crisis on Earth-X, Part 3"||Does not appear||Guest||Does not appear|
|General Wade Eiling||Clancy Brown||"Plastique"||Recurring||Does not appear|
|Tina McGee||Amanda Pays||"The Man in the Yellow Suit"||Guest||Recurring||Does not appear|
|Mason Bridge||Roger Howarth||"The Sound and the Fury"||Recurring||Does not appear|
|Martin Stein / Firestorm||Victor Garber||"Crazy for You"||Recurring||Guest||Does not appear|
|Linda Park / Doctor Light||Malese Jow||Recurring||Guest||Does not appear|
|Mark Mardon / Weather Wizard||Liam McIntyre||"Out of Time"||Recurring||Guest||Does not appear|
|Lisa Snart / Golden Glider||Peyton List||"Rogue Time"||Recurring||Guest||Does not appear|
|Eobard Thawne / Reverse-Flash||Matt Letscher||"Tricksters"||Recurring||Guest||Does not appear|
|Gregory Wolfe||Anthony Harrison||Guest||Does not appear|
|Richard Brooks||"Mixed Signals"||Does not appear||Recurring||Does not appear|
|Kendra Saunders / Hawkgirl||Ciara Renée||"Fast Enough"||Guest||Recurring||Does not appear|
|Hunter Zolomon / Zoom||Teddy Sears||"The Man Who Saved Central City"||Does not appear||Recurring||Does not appear|
|Patty Spivot||Shantel VanSanten||"Flash of Two Worlds"||Does not appear||Recurring||Does not appear|
|Francine West||Vanessa A. Williams||Does not appear||Recurring||Guest||Does not appear|
|Jesse Chambers Wells / Jesse Quick||Violett Beane||"The Darkness and the Light"||Does not appear||Recurring||Guest||Does not appear|
|Julian Albert / Doctor Alchemy||Tom Felton||"Paradox"||Does not appear||Recurring||Does not appear|
|Cynthia / Gypsy||Jessica Camacho||"Borrowing Problems from the Future"||Does not appear||Recurring||Does not appear|
|Tracy Brand||Anne Dudek||"I Know Who You Are"||Does not appear||Recurring||Does not appear|
|Marlize DeVoe||Kim Engelbrecht||"The Flash Reborn"||Does not appear||Recurring||Does not appear|
|Sharon Finkle||Donna Pescow||"Mixed Signals"||Does not appear||Recurring||Does not appear|
|Amunet Black||Katee Sackhoff||"Girls Night Out"||Does not appear||Recurring||Does not appear|
Barry Allen / FlashEdit
Bartholomew Henry "Barry" Allen (portrayed by Grant Gustin) is an awkward assistant crime-scene investigator (CSI) for the Central City Police Department (CCPD), who moonlights as the Flash. Barry is traumatized as a child (portrayed by Logan Williams) when his mother, Nora, is murdered by the Reverse-Flash. His father, Henry, is framed for the crime. Joe West becomes Barry's legal guardian, and Barry tries to discover what happened that night. He first appears in Arrow, personally investigating a superhuman-related crime in Starling City. Barry is a fan of the Arrow's exploits and learns Oliver Queen is the vigilante; they become good friends. Sometime after Barry returns to Central City, he is struck in his laboratory by lightning which was affected by dark matter from the explosion of the S.T.A.R. Lab's particle accelerator.
In season one Barry awakens from a nine-month coma and finds himself with superhuman speed. He uses his new powers to fight crime and hunt other metahumans in Central City as the Flash, a masked superhero, while he tries to identify his mother's murderer. He reveals his feelings for Iris West, who he has loved since childhood, complicating her relationship with Eddie. Barry learns from a 2024 newspaper in the Time Vault at S.T.A.R. Labs that he may eventually marry Iris. He becomes good friends with Cisco, Caitlin, and Dr. Wells, his idol and mentor on missions. Although Wells advises Barry on how to adapt and increase his powers, Barry becomes suspicious of Wells who he is learns is Eobard Thawne (a.k.a. Reverse-Flash) in disguise. After Eobard is unmasked, he tells Barry about his plan to use the Flash's speed and the particle accelerator to generate a portal to his own time (allowing Barry to return to the night of his mother's murder and prevent it). Barry travels back in time, but is warned by his older self not to interfere. As a result, he lets time run its natural course but uses his time-traveling to say a final goodbye to his mother before she passes away. Barry returns to the present and fights with Eobard, stopping him from returning to the future. Although Barry is almost killed, Eddie sacrifices himself to destroy Eobard. This creates a miniature black hole, which Ronnie stops with his own life.
In season two Barry becomes reclusive after Eddie and Ronnie's deaths, until a near-death experience convinces him to work with his friends again. He discovers a recording of Eobard's confession of Nora's murder that clears his father of all charges, with Barry inheriting Harrison Wells's fortune and resources from Eobard. Though rich, Barry chooses to continue working for CCPD while using Wells's money to fund his and his allies' activities. Barry and his team soon learn of the multiverse when metahumans from Earth-2 target him under orders from Zoom, receiving aid from the Earth-2's Dr. Harrison "Harry" Wells. Barry struggles with his choice to not save his mother and his hatred of Eobard, gradually accepting Harry as a friend upon learning that he is trying to save his daughter Jesse. The group are aided by Earth-2's Flash, Jay Garrick, before they learn that he is actually a time remnant clone of Hunter Zolomon, a.k.a. Zoom, and he steals Barry's Speed Force to cure his terminal illness. After sacrificing his powers to save Wally from Zoom, Harry helps Barry recreate the events which gave him his speed, but Barry disappears into the Speed Force as it helps him move on from his mother's death. After returning and defeating Zoom's army, Barry is forced to watch his father's death in his childhood home. He avenges his father by luring the Time Wraiths to Zoom, who is dragged into the Speed Force while being transformed into the Black Flash. After freeing the real Jay Garrick, Henry's Earth-3 counterpart, Barry goes back in time to avert his mother's death without considering the consequences.
In season three Barry saves his mother from Reverse-Flash and creates a new timeline (called "Flashpoint" by Eobard) in which he is no longer the Flash. In this timeline, Barry is a CSI without any connection to Iris's family. Barry's memories are overwritten by the new timeline along with losing his powers, forcing Barry to release Eobard in order to restore the timeline. Barry learns his actions have made vast differences to the timeline and he goes back in time again in an attempt to further restore the original timeline. Garrick stops Barry and convinces him to live with his mistakes from creating the "Flashpoint" timeline. As Barry accepts Wally's transition into Kid Flash and trains him, Barry struggles with the temptation to use his powers for personal gain. His struggles worsen upon learning the identity of Savitar, a clone of a future version of himself. After the rogue time remnant is killed, Barry takes Savitar's place in the Speed Force prison to atone for causing the events of third season to occur. He appoints Wally as the new Flash before taking his leave.
In season four, after being stranded in the Speed Force for six months, Barry is freed after Cisco builds a device mimicking his essence so that it can take his place there. Initially, he apparently lost his sanity due to his time spent in the Speed Force. However, after Iris is kidnapped by a Samuroid sent by a mysterious party, Barry rescues her and his health is restored. He claims that has no memories of his initial madness. Barry and the team later realize that the party who sent the Samuroid is stalking them and had strategically manipulated events surrounding Barry's return, creating twelve new metahumans in order to challenge them for a yet-to-be-known purpose. Barry discovers the culprit is Clifford DeVoe. After defeating the invaders from Earth-X, Barry and Iris are married by John Diggle. However, DeVoe frames Barry for murder shortly afterwards; not wanting to risk compromising his loved ones and allies by revealing his secrets, Barry allows himself to be sentenced to life imprisonment at Iron Height Penitentiary by Judge Hankerson, staying in his late-father's cell. A month later Ralph Dibney uses his new shapeshifting power to impersonate DeVoe and help clear Barry of all charges. Through his imprisonment, Barry learns that DeVoe needs to steal the bus metahumans' powers for his scheme. Barry is forced to take a leave of absence from the CCPD because of lingering suspicions and becomes a private investigator under Ralph. Barry also discovers he could lend his speed to people in near proximity, therefore letting them to enter his Flashtime.
Gustin also portrays Savitar (voiced by Tobin Bell in his exosuit and Andre Tricoteux in the character's initial portrayal), who is a temporal duplicate of Barry from the future (created due to a bootstrap paradox). The time remnant, shunned by Team Flash, would name himself after the Hindu god of motion while establishing himself as the first metahuman in recorded history by using a powered exoskeleton and the Philosopher's Stone to enhance his abilities. As Savitar is a clone of Barry's possible future self, he is essentially what Barry would become if he gave into his dark impulses. Following his imprisonment in the Speed Force after a battle with the Flash in 2021, Savitar takes advantage of Barry's post-Flashpoint paradox to regain his freedom and cement his existence by killing Iris West so that Barry would be in the right state of mind to ensure his creation. After H.R. Wells averts Iris's death, Savitar makes two final attempts to preserve his existence, but is defeated by Team Flash and killed by Iris. His body fades from existence.
Gustin also plays the Earth-2 non-metahuman Barry, a CSI at the CCPD and Ph.D. graduate who is married to Iris, and a version of the Flash from an alternate 2024 who was broken from his battles against Savitar and told his younger self of physicist Dr. Tracy Brand.
In season one Iris is a barista studying journalism. After graduating, she becomes an investigative reporter for the Central City Picture News. Iris, fascinated by the Flash, wants to learn more about him. She begins dating her father's partner, Eddie Thawne, while Barry is in a coma. When Barry admits his feelings about her, she is conflicted. She later confesses her love for Barry, but he goes back in time and negates the events of that day. Iris learns that Barry is the Flash after he saves her from Reverse-Flash. She feels betrayed by Barry for keeping secrets and further upset at her father for conspiring with him. Iris chooses Eddie, and she and Barry decide to let things proceed between them naturally. However, Eddie kills himself to prevent Reverse-Flash from being born, and Iris is sent into a deep depression.
In season two Iris becomes more involved with the S.T.A.R. Labs team. She encourages Barry to pursue a relationship with Patty Spivot. Iris learns that her mother is terminally ill and gave birth to a son, Wally, after abandoning her family. She tells her father about Wally, and they meet him at Christmas. Iris forgives her mother on her deathbed and bonds with Wally after she saves his life. She accepts Eddie's death after seeing his video message (recorded by Barry when he is time-traveling) in which he tells her how happy she makes him. Iris reconsiders a relationship with Barry after he breaks up with Patty, and professes her love to him near the end of the season.
In season three, during the Flashpoint timeline, Iris assists Wally who fights crime as the Flash. In the reset timeline, Iris reconciles with Joe after Barry reveals the changes. Iris and Barry begin their romantic relationship, but she wonders if she really is needed. Barry reassures her, saying that there would be no Flash without her. Iris and Barry become engaged after an encounter with Music Meister. An alternate future Iris is killed by Savitar, but Barry tries to prevent her murder. Ultimately, H.R. takes her place for Savitar to kill which changes the future. She, along with Barry, tries to talk down Savitar, but he continues his plan and attacks Barry when it is foiled. Iris shoots Savitar through the back to save Barry.
In season four Iris takes on a leadership role with S.T.A.R. Labs, working with Cisco and Wally when Barry is in the Speed Force. After Barry returns, their church wedding is interrupted by Earth-X invaders, and Barry and Iris are married by John Diggle. However, the DeVoes frame Barry for murder shortly after, leading Iris and her family and friends to try to prove Barry's innocence.
Patton also portrays the Earth-2 Iris, a detective for the CCPD who is married to Barry. Mourning her father, Iris is comforted after she helps Team Flash deal with Zoom.
Caitlin Snow / Killer FrostEdit
In season one she provides the medical support for Barry's team. Caitlin grieves her fiancé Ronnie Raymond, who she lost in the particle accelerator explosion. After embracing her loss, she becomes more compassionate and kind. She discovers that Ronnie survived and merged with Professor Martin Stein into the metahuman Firestorm. Caitlin convinces Stein to let her team help separate the two, which is successful. Ronnie and Stein leave Central City following an encounter with General Wade Eiling. After Dr. Wells is exposed as the Reverse-Flash, Caitlin is skeptical until Cisco and Joe find the real Dr. Wells's corpse and discover their mentor's true identity. Ronnie and Caitlin marry when he returns to help Barry and Oliver Queen against Reverse-Flash.
In season two Caitlin is widowed following Ronnie's sacrifice to stop the singularity. She works at Mercury Labs before returning to S.T.A.R. Labs to aid Barry against Zoom. She is not skeptical of Dr. Harrison "Harry" Wells of Earth-2 and begins a romantic relationship with Jay Garrick, the Earth-2 Flash. Caitlin and Harry develop "Velocity-6" to grant temporary speed, once she learns Jay is dying. It is perfected to Velocity-9, which repairs Jay's damaged cells and restores his speed. Caitlin is devastated when the team discovers Jay is actually Zoom, a.k.a. Hunter Zolomon. Hunter abducts Caitlin to bring her to Earth-2. After meeting her doppelgänger, Killer Frost, and almost getting murdered, Zoom brings Caitlin to Earth-1 to watch him conquer it. Hunter tries to manipulate her into turning evil, believing Caitlin has darkness inside her. Caitlin returns to S.T.A.R. Labs unharmed to aid Team Flash, though afterward she suffers acute stress disorder, seeing visions of Zoom.
Panabaker also portrays the metahuman villainess Earth-2 Caitlin, known as Killer Frost, who is married to Deathstorm (Ronnie Raymond of Earth-2) and works for Zoom along with Reverb. Earth-2 Caitlin did not finish medical school and became a criminal. After the particle accelerator explosion on her Earth, Caitlin develops the powers of cryokinesis and becomes Killer Frost. Her powers turned her hair white and her lips and eyes blue; she is unable to touch anyone without exposing them to absolute sub-zero temperatures and killing them. The only person immune to this is Ronnie, who merges with Martin Stein and becomes a pyrokinetic entity with an almost supernova level of heat. Initially betraying Zoom's Earth-1 enemies, Caitlin helps them escape from Earth-2. After Zoom murders Ronnie, Caitlin tries to murder her doppelgänger out of revenge; Zoom kills her for this.
In season three she is a pediatric ophthalmologist in the Flashpoint timeline. In the reset timeline, Caitlin has developed cryokinetic abilities, which she has very little control over. Her lips turn blue and her hair becomes white, which prompts Caitlin to use power cuffs to dampen her powers. Cisco vibes her future as Killer Frost, and Caitlin reveals her powers to the team in which Barry blames himself for her condition afterward. Caitlin uses her powers to rescue Barry from Savitar, which worsens her condition. Her developing powers have psychological effects, which cause her to develop a form of dissociative identity disorder. The Killer Frost persona takes over and aligns herself with Savitar after he unmasks himself as a time remnant of Barry. Savitar has Caitlin kill the Black Flash with her powers. However, Caitlin regains control over herself and helps Team Flash against Savitar. Despite Julian and her mother developing a cure for her condition, Caitlin leaves to find herself. In an alternate 2024 Caitlin is a metahuman villainess like her Earth-2 doppelgänger.
In season four Caitlin helped Cisco bring Barry back from the Speed Force. She has better control of her powers which she can suppress at will. She struggles for control with her Killer Frost personality as a result of taking the cure, which partially worked. Caitlin also has problems with the city's criminal element after working for metahuman criminal Amunet Black when Barry was in the Speed Force. Iris helps both of Caitlin's personalities accept each other. However, Caitlin loses her powers after a fight with Clifford DeVoe who tells her to thaw. Following Flash's fight with Siren-X, Caitlin sees in an analysis that Killer Frost is still in her and works to find a way to bring her out again. In the meantime, she makes use of a cryonic weaponry from Cisco which simulates the use of her lost powers. Blacksmith theorizes that Caitlin was unable to access Killer Frost due to the placebo effect. Following the defeat of Norvak, Caitlin tells Joe West of this theory and plans to test it out. Later on, Caitlin gets Cisco to help with a memory where it recapped to her that she first turned into Killer Frost at a young age, therefore she has been already a metahuman long before the particle accelerator explosion and Barry possibly not responsible for her condition from his time traveling actions as he believed.
In season one Eddie is Joe West's partner and Iris West's boyfriend. He is initially jealous of Barry because of his childhood bond with Iris. Eddie is suspicious of Barry's true feelings for Iris despite denials, though Barry and Eddie do eventually become good friends. Eddie teaches Barry how to box, which, in addition to the trainings provided by Oliver Queen, helps Barry becomes a capable combatant. Eddie initially sees the Flash as a menace and is head of a task force dedicated to capturing the hero. He changes his perception of the Flash after a near-death experience with the Reverse-Flash. He learns of Barry's secret identity and helps in the investigation of Harrison Wells as the Reverse-Flash. Eddie later discovers that he is a forefather of Eobard Thawne and that Iris may eventually marry Barry. However, after a conversation with Martin Stein, Eddie realizes that the future is not set and chooses to stop his sociopathic descendant by killing himself, dying in Iris's arms while causing Eobard to vanish. His body is sucked into a wormhole caused by Eobard's manipulations.
In season two Eddie briefly appears in a vision as a result of Barry's guilt towards his death, and a memorial is set up in the precinct in his honor. Eddie later appears again when Barry travels back in time, and Barry offers to make Eddie a video message to Iris so that she can move on from their relationship.
In season three the Speed Force takes the form of Eddie to help teach Barry to realize the true meaning of sacrifice and that he must be the one to save Iris from Savitar.
Cosnett was originally slated to portray Jay Garrick in the pilot before the character was changed to Eddie Thawne.
Cisco Ramon / VibeEdit
Francisco "Cisco" Ramon (portrayed by Carlos Valdes) is a mechanical engineering genius who works at S.T.A.R. Labs. He is also a metahuman superhero codenamed Vibe. He is based on the DC Comics character of the same name.
In season one Cisco is a scientist at S.T.A.R. Labs who has a very relaxed comedic wit,[according to whom?] with a tendency to nickname the metahuman villains they face. He develops equipment and arsenal for Barry and his vigilante allies. Cisco forms a friendly bond with Ray Palmer (the Atom) because of their genius intellects, and is an admirer of Dinah Laurel Lance (Black Canary). Cisco is on bad terms with his brother Dante. Despite his close friendship with Barry, Cisco is afraid of the metahumans and fears that his friend may go rogue like his enemies. He develops various measures including cryonic and heat guns to counter the Flash's powers, but they are stolen by criminals Leonard Snart and Mick Rory for that very purpose. Although Wells considers him a surrogate son, Cisco is killed for discovering Wells's true identity, though Barry later resets the timeline; Cisco retained the memory of his murder and the knowledge of the Reverse-Flash's true identity. Cisco learns from Eobard that this is because he was also affected by the particle accelerator's explosion, having the ability to see into alternate timelines and realities.
In season two Cisco is a technical advisor and metahuman task force armorer for the CCPD, building devices to counter super-criminals. He frequently works with Joe West. Cisco's metahuman abilities develop further, allowing him to see visions (or vibes) including precognition. He uses his abilities to locate Earth-2 metahumans through touch, though he is not yet in full control of them. Martin Stein is the first to discover his secret. Cisco is forced to reveal his powers to the team because of Harry Wells of Earth-2. Cisco adopts the codename "Vibe" and receives a retrofitting visor that can help him control his powers. He initially struggles to trust Harry due to his experience with Eobard, but he realizes that Harry is not like Eobard. Despite it, he still cannot get along with Harry due to contrasting personalities, even admitting that Eobard was a nicer guy. He briefly dates Kendra Saunders. After encountering his Earth-2 doppelgänger, Reverb, Cisco fears that he is on the path to becoming a villain. However, Cisco tries to harness his powers for heroic purposes. Cisco also meets his brother's Earth-2 doppelgänger, Rupture, after Zoom frames him for Reverb's death. After this, Cisco and Dante reconcile. During an encounter with the Black Canary's Earth-2 doppelgänger, Black Siren, Cisco briefly displays a powerful sonic attack against her. He also develops the ability to open portals to parallel universes.
The Earth-2 version of the character (also portrayed by Valdes) is the metahuman villain Reverb, who works for Zoom, along with Killer Frost and Deathstorm, before he is killed by Zoom. Cisco has more experience and control of his powers than his Earth-1 self; he has been aware of Vibe's existence and powers even before Earth-1 Cisco appears on Earth-2. He can manipulate sonic vibrations to create powerful shock waves of considerable strength, and it is implied that Cisco's power level surpasses both Killer Frost and Deathstorm as they are intimidated by him. His visor technology is obtained by his Earth-1 counterpart following his death, and Harry later uses its components to modify Vibe's own visor.
In season three Cisco is a billionaire tech magnate in the Flashpoint timeline, profiting with his inventions but also secretly helping Flash (Wally West) and Iris. In the reset timeline Cisco is coming to terms with his brother's death, but his grief worsens when Cisco learns that Barry is inadvertently responsible for Dante's death; their friendship is strained for a while. However, Cisco and Barry reconcile after Cisco inadvertently alters history to the worse during the Dominators invasion. Cisco starts to use his powers more, but he refuses to utilize their destructive potential like Reverb. He gains confidence that he is not on the same path as his Earth-2 doppelgänger and builds a prototype suit prior to Dante's death. Cisco's refusal to fully use his powers against Killer Frost gives her a psychological advantage over him. His rejection of his dark side eventually inspires Caitlin to do the same. Cisco shares a budding romance with Cynthia Reynolds (Gypsy), a metahuman bounty hunter from Earth-19. Cisco also struggles to build a friendship with Harrison "H.R." Wells from Earth-19, not because of his experience with Eobard Thawne but of both he and Harry see him as a nuisance. In the alternate 2024, Cisco lost his hands after the fight with Killer Frost, and thus the use of his powers. He replaced them with cybernetic prostheses and is dejected after Savitar's attacks has left Central City without a sense of hope.
In season four, Cisco succeeds in bringing Barry back from the Speed Force after six months of building a device that mirrors Barry's essence with help from Felicity, Harry, Caitlin, Tracy, Christina "Tina" McGee, and Curtis Holt. After Barry is sentenced to prison after the DeVoes framed him for murder, Cisco works with Ralph Dibny, who substitutes for the Flash as the Elongated Man.
In season one he activates a particle accelerator that releases dark matter energy in Central City, killing several civilians and granting various individuals metahuman abilities, including Barry Allen. Nine months later, Wells is a recluse and a pariah, confined to a wheelchair. Along with Cisco Ramon and Caitlin Snow, he helps develop Barry's powers as the Flash and mentors him in pushing his speed to the limit to come up with novel solutions to take down metahuman criminals. However, Wells has many secrets: he is faking paralysis, possesses the artificial intelligence Gideon which has information from the future, and is willing to kill to protect his protégé and cover his own tracks. Wells is revealed to be the Reverse-Flash, the mysterious speedster in a yellow suit who killed Barry's mother in 2000. It is also revealed that Eobard Thawne killed the real Harrison Wells, along with his wife Tess Morgan, and assumed his identity; he orchestrated the events that would turn Barry into the Flash for his own agenda. Eobard's plans are foiled and he is erased from existence when his ancestor Eddie Thawne commits suicide, though the Reverse-Flash's existence lingers to preserve the timeline. In season two Eobard's last will as Harrison Wells contains a recorded confession for Barry that clears Henry of all charges. In season four a time-remnant version of Eobard, who remains the under the guise of Harrison Wells, appears in the Crisis on Earth-X crossover. This time remnant settled in Earth-X and governed the Nazi-ruled Earth with Dark Arrow (Oliver Queen's doppelgänger), Overgirl (Kara Danvers's doppelgänger) and Prometheus (Tommy Merlyn's doppelgänger) as a member of the New Reichsmen.
Season two features the Earth-2 version of Dr. Harrison "Harry" Wells, the father of Jesse Wells. He, like Eobard, used an exploding particle accelerator to create metahumans, including the psychopathic serial killer Hunter Zolomon as the rogue speedster Zoom. Harry refused to take responsibility while making a profit by developing metahuman detector technology. But when Zoom kidnaps Jesse, Harry travels to Earth-1 to assist Barry in the fight against Zoom's metahumans and to locate Jesse. Team Flash, specifically Cisco and Joe, distrust him because of the prior betrayal by Eobard, and Harry himself is mistaken by people, unaware that Eobard's actions ruined his Earth-1 doppelgänger's name and legacy. Harry meets the Reverse-Flash's younger self, suspecting that the encounter between them is what caused Eobard's future actions towards his Earth-1 self and lead Harry to hate Thawne. Harry is extorted by Zoom into developing a device to steal the Flash's speed for Zoom in exchange for his daughter's life, a feat that even the Reverse-Flash had failed to achieve. But Harry confesses to his collaboration with Zoom and gains Barry and Cisco's help rescuing Jesse from Earth-2; Harry and Jesse then seek refuge on Earth-1. After Barry's speed is sacrificed to Zoom to save Wally West, Harry recreates a miniature particle accelerator to help Barry regain these powers. Although the accelerator explosion causes Barry to disappear, and its dark matter affects both Wally and Jesse, Harry eventually locates Barry at the Speed Force; with Cisco and Iris's help, Harry brings Barry back and Barry wakes Jesse from the coma. After Zoom's defeat, Harry and Jesse return to Earth-2 with Jay Garrick, promising to help the Flash of Earth-3 return to his own Earth. Harry returns early in season three after Jesse is revealed to have developed super-speed as a result of the accelerator, but Harry asks the team talk his daughter out of pursuing heroics. After Barry and Jesse are forced to team up, Harry becomes more supportive of it. Harry helps Joe protect Iris after they arrive on Earth-2 to hide from Savitar, but they fail to stop her kidnapping. Harry despises his Earth-19 doppelgänger, H.R. Wells, who he considers a moron, but comes to respect H.R. after learning of his sacrifice for Iris. In season four's season premiere, it is revealed that Harry was one of the scientists who helped Cisco develop a device to take Barry's place in the Speed Force. Harry visits Earth-1 again after an argument with Jesse, and helps the team fight Clifford DeVoe.
Season three introduces his Earth-19 version, Harrison "H.R." Wells. H.R. is one of several versions of Harrison Wells that finds the cryptogram sent by Harry through the multiverse and expresses interest in aiding Team Flash. Cisco determines that H.R. is not a scientist; H.R.'s scientist partner at S.T.A.R. Labs, Randolph Morgan, was the one who solved Harry's cryptogram for him. Barry suggests letting H.R. stay a few weeks and he proves his worth by helping form plans and locating super-criminals; like Harry and Eobard, H.R. is a skilled organizer, businessman, and entrepreneur. He trains Wally to be a hero and, after discovering how many criminals breached the facility, strives to transform S.T.A.R. Labs into a museum to maintain Team Flash's cover. Gypsy, an enforcer from Earth-19, arrives to retrieve H.R. on charges of crossing dimensions, but is defeated by Cisco. In the battle against Savitar, H.R. sacrifices himself by disguising himself as Iris and taking her place to be killed by Savitar. In the alternate 2024, H.R. was a successful novelist.
During the fourth-season episode "When Harry Met Harry...", Harry briefly creates the "Council of Wells", which consists of the smartest versions of himself from across the multiverse: Harrison Wolfgang Wells, a German author and scientist from Earth-12; H. Lothario Wells, a billionaire and playboy from Earth-47; and Wells 2.0., a cyborg from Earth-22. Also shown is a wizard variant named "Wells the Grey".
Joseph "Joe" West (portrayed by Jesse L. Martin) is a CCPD detective, father of Iris and Wally West, and legal guardian to Barry Allen following Nora Allen's death and Henry Allen's incarceration.
In season one he is one of the few who knows Barry's secret; he reluctantly becomes Barry's partner against metahuman criminals by offering him support in crime fighting. Joe also gives Barry advice on his feelings for Iris. He assists Barry's attempts to prove Henry innocent and secretly investigates Wells, suspicious of his intentions. Joe and the team ultimately discover Wells's true identity.
In season two Joe is head of the metahuman task-force along with Cisco and Patty Spivot. He relies on Cisco's inventions to deal with the super criminals and becomes a father figure to them both. Joe struggles with his relationship with his estranged wife Francine who, unbeknownst to Joe, gave birth to their son Wally after she left the family. He is distraught and unsure of how to be a father to Wally, but after Zoom kidnaps Wally they become close. Joe is proud of Wally's aptitude in mechanical engineering and his need to help people. After Wally is exposed to the dark matter, Joe suspects that his son will become a metahuman.
In the Flashpoint timeline of season three Joe is an alcoholic who is uncommitted to his job and estranged from his children. He is unaware that Wally is the Flash. In the reset timeline Joe and Iris are not speaking because Joe never told her that her mother was alive; however, they reconcile after Barry reveals the timeline changes. Joe fears for Wally's life after discovering Wally has dreams of being Kid Flash. After Wally becomes a speedster, however, Joe eventually accepts his son's destiny. He begins to move on from his widowhood by dating district attorney Cecile Horton. In an alternate 2024 Joe grieves over Iris's death and Wally's paralysis and catatonia.
In season four, Joe learns that Cecile is pregnant with his child, later revealed to be a daughter. Having a child young enough to be their grandchild cause him and Cecile to experience a midlife crisis that they eventually overcome together. When Barry is incarcerated at Iron Heights, Joe does everything he can to help prove his innocence. When Cecile goes into labour while Flash was in a final battle with Thinker, Joe stays by her as Caitlin helps to deliver their child; he and Cecile later named their newborn daughter Jenna. He later talks to Wally at the party that followed, being proud of his son's new confidence, and they are delighted with Jenna's birth.
Martin also portrays the Earth-2 Joseph West, a singer who does not share a father-son bond with Barry and actually blames him for Iris becoming a police officer. Earth-2 Joseph is killed by Deathstorm and Killer Frost.
Wally West / Kid FlashEdit
Wallace "Wally" West (portrayed by Keiynan Lonsdale) is Iris's unknown brother and Joe's son, described as "a bit of a wayward kid who has some attitude problems and some authority issues and is quick with a sassy remark". Based on the DC Comics character of the same name, the character is an amalgamation of his original interpretation and the interpretation that was introduced during DC's The New 52 relaunch.
Wally was born after his mother's abandonment of her family, leading Joe and Iris to be unaware of his existence for eighteen years. Wally first meets his father and sister during a Christmas party shortly before his mother dies, and he struggles to bond with Joe and Iris. He also forms a brotherly bond with Barry Allen, although he is suspicious of Barry's weird behavior. Formerly a drag racer, Wally is enrolled at the same university Iris attended, majoring in mechanical engineering. After repeatedly being rescued by the Flash, Wally becomes fascinated with the superhero and discovers that his father has a connection with him, but is unaware that he is Barry. He is inspired by both his father and the Flash to help people, and as a result becomes closer to Joe. Later, when Wally and Jesse Wells are locked in the Time Vault at S.T.A.R. Labs, they work together to escape but are accidentally affected by the dark matter released from the attempt to restore Barry's powers; his father and Barry suspect that Wally is turning into a metahuman after the incident. Eventually Wally discovers Barry's secrets when Zoom abducts and kills Barry's father, and fully accepts Barry after he rescues Joe from Zoom.
In the Flashpoint timeline, Wally is the Flash, until he is badly injured by the rogue speedster Rival and Barry and Eobard Thawne reset the timeline. In the post-Flashpoint timeline, Wally struggles to become a speedster after witnessing Jesse becoming one. After Alchemy seeks Wally out, Wally learns of his alternate life and uses the villain's device to gain his speed. Wally then becomes a speedster after Caitlin stabilizes his metamorphosis, and he is eager to join Barry as his partner, Kid Flash, to both his father and sister's concerns. Wally also assists Cisco due to his background in mechanical engineering. Barry gradually appreciates Wally's supports and asking Wally's help to save Iris from Savitar. Though H.R. saves Iris instead after he sacrifices himself, Wally and Jay Garrick join Barry in the final battle to defeat Savitar. After Barry chooses to take Savitar's place in the Speed Force to stabilize it, he appoints Wally to be his successor as the Flash. In the alternate 2024, Wally sought revenge against Savitar shortly after Iris's murder but was rendered paraplegic and catatonic after the fight.
In season four, Wally leaves Central City for Blue Valley on a mission of self-discovery after Jesse breaks up with him. He later returned for his sister's wedding. He resumes his journey though, reaching China before being recruited by Rip Hunter to join the Legends in their fight against Mallus. Following the fight with Thinker, Wally attended the party that followed the birth of his father's new daughter with Cecile Horton, and is delighted of having a younger sibling. He told his father about his battle to save the universe from Mallus and how he was working not to be in Barry's shadow, showing Joe his confidence as a hero.
Lonsdale decides that he will not be returning to The Flash full time on season 5, due to his desire to seek other acting opportunities.
It was always intended for Wally to be the son of Joe and brother of Iris, which differs from the character's comic history, as the producers felt it "weird" for second seasons of television series to introduce previously unmentioned cousins of established characters. Keiynan Lonsdale originally auditioned for Legends of Tomorrow to portray Jefferson "Jax" Jackson.
Clifford DeVoe / ThinkerEdit
Clifford DeVoe (portrayed by Neil Sandilands) is a metahuman with superhuman intelligence, who seeks to fix all that he deems wrong with humanity as the Thinker. Prior to his appearance, he was alluded to by Abra Kadabra and Savitar as a powerful future adversary. Originally a mild-mannered professor who dreamed of expanding the way people think, Clifford DeVoe used the "thinking cap" his engineer wife Marlize DeVoe built on his specifications and powered it with the dark matter wave from the S.T.A.R. Labs explosion to boost his intelligence. It eventually rendered him paraplegic and with an advanced form of amyotrophic lateral sclerosis, Marlize developing a hoverchair to delay the affliction as he developed a god complex. Having deduced Barry's imprisonment in the Speed Force, DeVoe orchestrated events that to force the Flash's return while arranging the creation of twelve new metahumans on the bus directly exposed to the resulting dark matter wave. DeVoe then hunted them to acquire their powers for his own, being steps ahead of Team Flash as he used them to capture Kilg%re and Becky Sharpe (Sugar Lyn Beard) and induct Ralph Dibny into their group while he personally captures the Weeper. Barry soon learns of DeVoe's existence, the villain accepting the "Thinker" moniker Vibe invented while continuing to be steps ahead of the group.
Using Blacksmith to acquire Dominic Lanse (Kendrick Sampson), DeVoe transfers his consciousness into the metahuman's body to acquire his telepathy while using his lifeless original body to frame Barry for murder. This ultimately played to his plan in causing an Iron Heights Prison breakout, acquiring Becky's body and luck manipulation along with the powers of Kilg%re, Black Bison, and Dwarfstar while killing Warden Wolfe to Marlize's horror. This was the start of his personality changing for the worst as, showing indifference upon learning that Barry is exonerated, DeVoe places an extract of Weeper's tears in his wife's drink to make her more obedient. He later transferred his mind into the body of Izzy Bowin to acquire her powers, leaving only Ralph and four more metahumans to capture. After proceeding to take the powers of Melting Point, Null, and Folded Man, Thinker manipulated events that led to him taking Elongated Man's body and thawing Caitlin Snow's Killer Frost form. Thinker then used Elongated Man's powers to shape his body into his own so that his wife can now love all of him. After raiding an A.R.G.U.S. facility, Thinker begins to put his Enlightenment Satellite plan into action. With help from Marlize, Thinker's plot was thwarted while Elongated Man regained control of his body when Barry's conscience enters his mind to help him fight off DeVoe, during which DeVoe's good side manifested as a corpse, showing that he was truly beyond redemption. With his original body dead and Marlize having destroyed every known means he has to sustain his survival, DeVoe no longer exists.
Cecile Horton (portrayed by Danielle Nicolet) is the Central City district attorney and a close friend of Joe West. She would give occasional legal advice to Joe in season one. Cecile and Joe begin a romantic relationship in season three and expect a child in season four. Nicolet will be promoted to a series regular for season 5.
Ralph Dibny / Elongated ManEdit
Ralph Dibny (portrayed by Hartley Sawyer) is a metahuman with the ability to stretch his body to superhuman lengths and sizes. In season one, Ralph's name was referred by Eobard Thawne of him being one of the victims killed by the particle accelerator explosion prior to the timeline change in season three. Dibny was a CCPD detective until Barry testified against him for tampering with evidence. It is later revealed that Dibny committed perjury out of a misguided sense of justice rather than a desire for personal gain: he feared a suspect would get away with murder, and thus planted fake evidence. Dibny then became a shady private detective specializing in infidelity cases. He was on the bus that was exposed to dark matter energy and became a metahuman and ally to Team Flash. After Barry is framed by Clifford DeVoe for murder and imprisoned at Iron Heights, Ralph substitutes Barry as Central City's new superhero Elongated Man, to continue Team Flash's fight against DeVoe and other criminals while working to free Barry. Posing as Clifford DeVoe, he appeared before the judge that presided over Barry's trial claiming that someone knocked him out and made him look dead. This statement convinced Judge Hankerson to exonerate Barry. Elongated Man's body was later taken over by Thinker who stretched it into his own image. During the final battle with Thinker, Elongated Man regained control of his body and helped to defeat him.
Nora West-Allen / XSEdit
Nora West-Allen (portrayed by Jessica Parker Kennedy) is a mysterious girl with super-speed. She is first seen at the wedding of Barry Allen and Iris West before the Earth-X forces crash it. Nora interacts with each member of Team Flash throughout the season and secretly helps Barry stop a falling satellite as part of Thinker's failsafe. Afterwards, she appears at the party that welcomes the daughter of Joe West and Cecile Horton. Nora reveals herself to the team as Barry and Iris' daughter from the future and states she has made a big mistake. When using her super-speed, she has both orange/yellow lightning similar to Barry and purple lightning like when Iris was briefly a speedster. She uses the superhero name XS, given to her by her parents.
This is a list of recurring actors and the characters they portrayed in multiple episodes, which were significant roles, sometimes across multiple seasons. The characters are listed, in alphabetical order by actor, by the season in which they first appeared.
Introduced in season oneEdit
- Ronnie Raymond / Firestorm (portrayed by Robbie Amell) - An engineer at S.T.A.R. Labs and Caitlin Snow's fiancé, based on the DC Comics character of the same name who is half of the character Firestorm. He is thought to be dead in the particle accelerator explosion, saving the lives of his co-workers. He survived the accident, which merged him with Martin Stein and the F.I.R.E.S.T.O.R.M. transmutation matrix, transforming both of them into one pyrokinetic entity. Though Firestorm is Ronnie's body, it is Stein who remains in control for most of their existence, with Ronnie occasionally taking control for brief moments. They eventually learn to control their shared powers, including an ability to separate themselves at will. Like Caitlin, Cisco and Stein, Ronnie also becomes good friends with Barry Allen; he and Barry ultimately join forces with Oliver Queen to subdue the Reverse-Flash. Ronnie marries Caitlin. In season two Ronnie dies and sacrifices himself to stop the singularity above Central City.
- Oliver Queen / Green Arrow (portrayed by Stephen Amell) - a former-playboy billionaire and politician who operates as a vigilante in Star City and is a friend of Barry Allen's. He helps Barry in hand-to-hand combat and other skills to turn Barry into a capable combatant with or without powers. Amell stars as the character on Arrow.
- The Earth-2 version died and his father Robert Queen became the Arrow instead.
- Amell also portrays Dark Arrow, the Earth-X version of the character.
- General Wade Eiling (portrayed by Clancy Brown) - A general with an interest in metahumans, who wants to use them for the U.S. Army, and has a history with S.T.A.R. Labs. Eiling learns of Barry Allen's identity as the Flash, however, Eobard Thawne gives the general to Grodd to be placed under the gorilla's control. After being freed by the Flash, he and Barry form a grudging respect despite their enmity.
- Professor Martin Stein (portrayed by Victor Garber) - A nuclear physicist focused on transmutation, based on the DC Comics character of the same name and is also half of the character Firestorm. He remains in control of Firestorm during the initial merging, though Ronnie Raymond occasionally takes control for brief moments. They learn to control their shared powers, including an ability to separate themselves at will. Professor Stein also subsequently gives Barry Allen and Eddie Thawne some insight on the possibility of time travel and their respective destinies. In season two, Stein becomes a member of Team Flash and the group's scientific advisor following Eobard Thawne's demise. He also discovers Cisco Ramon's secret as a metahuman and encourages him to accept his powers. When it turns out that his body is unstable as a consequence of the combination of the dark matter with Stein's own matrix, Stein gains a new partner in Jefferson "Jax" Jackson. In season three, Stein discovers that he now has a daughter, Lily Stein, due to both Barry's and his own respective time-traveling actions; he never had a child due to his fear of being as neglectful as his father and his past commitments to his work prior to the timeline's reset. In season four, Stein is killed when he tries to escape from Earth-X with Barry and other heroes.
- The Earth-2 version of the character is one-half of the conjoined metahuman criminal Deathstorm. Ronnie does not release Stein or listen to him and he eventually stops talking altogether. He is killed by Zoom alongside Deathstorm.
- Nora Allen (portrayed by Michelle Harrison) - Barry Allen's mother. Although the Reverse-Flash was actually trying to kill the young Barry during the fight with the Flash's future self, Nora became Reverse-Flash's target after young Barry was taken to safety, as he thought such a tragedy would prevent Barry from becoming Flash. Nora also appears as one of the Speed Force manifestations that helps Barry get to terms with her death.
- Harrison voices the Earth-2 version of the character. On this Earth, she remains alive and happy.
- Mason Bridge (portrayed by Roger Howarth) - A reporter at the Central City Picture News who mentors Iris West. He becomes suspicious of Eobard Thawne and finds evidence of Simon Stagg's murder. Mason is killed by the Reverse-Flash and all evidence erased, but his disappearance leads Barry and Joe to discover he was murdered for learning about Thawne. When Iris begins looking into Mason's disappearance, Eddie Thawne covers with a story, but Iris eventually learns the truth for herself.
- Linda Park (portrayed by Malese Jow) - A journalist for the Central City Picture News who befriends Iris West and Barry Allen. She briefly dated Barry in season one. The character was originally portrayed by Olivia Cheng in the series Arrow.
- Jow also portrays Doctor Light, the Earth-2 version of the character, based on the Kimiyo Hoshi's conception of the character. She is a thief who is very easily startled and paranoid and willing to do anything to stay out of Zoom's sights, include attempting to murder her doppelgänger so that she can takeover her life.
- Eobard Thawne / Reverse-Flash (portrayed by Matt Letscher) - The time-travelling archenemy of Barry Allen and a future descendant of Eddie Thawne, based on the DC Comics character of the same name. In the 22nd century Eobard was obsessed with the Flash and desired to "become" his idol. Eobard duplicated the reaction and become a speedster, only to learn that he was destined to become his idol's greatest enemy and grew to despise him. Eobard became the "reverse" of everything the Flash was and the two enemies encountered each other over years, neither strong enough to defeat the other. At one point Reverse-Flash, who had traveled to 2024, vanishes with the Flash in the midst of a "crisis". Discovering Flash's identity, Eobard murders Nora Allen after a failed attempt to kill Barry as a child, but loses his connection to the Speed Force and became stranded in the past. He takes on the appearance of Dr. Harrison Wells and manipulates events in attempts to return to his time period; Eddie sacrifices himself in the first-season finale, causing Eobard's existence to cease. Eobard's first chronological appearance occurs during season two; the Reverse-Flash travels back in time to 2016, encountering the Flash for the first time (from Eobard's perspective). In the midst of using Tina McGee's "speed machine" construction to return to his time period, he suffers a severe beating from the Flash. While being briefly imprisoned at S.T.A.R. Labs, he came to know about some of his own future actions after interactions with the Flash, Cisco Ramon and Harry Wells, but is send back home to prevent a time paradox. In the second-season finale, the Flash travels back to prevent the Reverse-Flash from murdering Nora, altering significant events. In season three's premiere, Eobard is imprisoned by Barry while they're both in the Flashpoint timeline, trying to convince his nemesis to restore the reality they both know; Barry gives in when he realizes the new timeline's dangers. The Reverse-Flash is released to murder Nora, which supposedly "fixes" the timeline. Eobard then brings Barry back to the different timeline and leaves, but not before taunting his nemesis, implies his awareness that the timeline is not likely resetting exactly.
- Lisa Snart / Golden Glider (portrayed by Peyton List) - An aspiring criminal and Leonard Snart's younger sister. In season one she shares a mutual attraction with Cisco Ramon who she initially kidnapped for her brother and coerced into creating a gun that turns things into gold, but later becomes genuinely fond of Cisco. Lisa later helped her brother free the metahuman criminals in the Pipeline. In season two Lisa sought Team Flash's help when her brother was found to be working for their abusive father Lewis Snart (later revealed to be due to her father threatening her life).
- Mark Mardon / Weather Wizard (portrayed by Liam McIntyre) - A criminal with the ability to control the weather of his surroundings. Having similar powers to his sibling Clyde, Mark returns to Central City seeking revenge on Joe West for killing his brother. He was being held in the S.T.A.R. Labs prison before being set free by Leonard Snart and offered a place in his crew the "Rogues". Mark murdered Patty Spivot's father during a bank robbery with his brother months prior to the particle accelerator's explosion. He remains nursing his grudge against both Joe West and the Flash.
- Leonard Snart / Captain Cold (portrayed by Wentworth Miller) - the son of a police officer and Lisa Snart's brother who turns to crime. Snart is a cunning and intelligent bank robber who seeks to eliminate the Flash and steals a cryonic gun from S.T.A.R. Labs, a weapon Cisco created as a failsafe to stop the Flash. Snart and Mick Rory attempt to kill The Flash but fail, though the Flash is revealed to the world. He extorts Flash's identity from Cisco and later becomes leader of his crew which Barry dubs the "Rogues". Barry later asks Snart to assist the transport of metahumans from Central City to Lian Yu, for which Snart wants his criminal record erased. He double-crosses Barry by sabotaging the truck containing Mark Mardon, Kyle Nimbus, Roy Bivolo, Jake Simmons and Shawna Baez. Snart kills Simmons who he claims owed him money. Leonard is later extorted into working for his father, Lewis Snart, when he plants a bomb inside Lisa's head. After Team Flash successfully remove it, Leonard kills Lewis out of spite and is arrested for his father's murder. He is later broken out by Mardon to get revenge on Barry but declines and warns Barry of Mardon's plans. Snart had a part in turning Sam Scudder and Rosa Dillon into metahumans; when they come to seek revenge Barry reveals that Snart is traveling with friends of theirs called the Legends. During the alien attack, the Legends appear, prompting Barry to ask Snart's whereabouts; it is said that Snart sacrificed himself to save the team, proving to be a hero. Months later, Barry recruits Snart from a point in time where he was traveling with the Legends in an attempt to steal Dominator technology from A.R.G.U.S. The two succeed, and Snart is returned to the Legends.
- The Earth-2 version of the character is the mayor of Central City.
- Miller also portrays Citizen Cold, the Earth-X version of the character during "Crisis on Earth-X" crossover. Citizen Cold is a vigilante and a member of the Freedom Fighters, a resistance movement against the New Reich in a Nazi-governed world; he is also a lover to Ray Terrill. Citizen Cold later appears on Earth-X where he helps Flash deal with Siren-X, a remnant of the New Reich who plans to detonate Fallout at the CCPD in order to avenge Dark Arrow's death. During this time, Citizen Cold helps Flash cope with what Thinker did with Elongated Man. After Siren-X is defeated and Fallout is in A.R.G.U.S. custody, Citizen Cold returns to Earth-X to marry Ray.
- Tina McGee (portrayed by Amanda Pays) - A friend of Harrison Wells (Earth-1 version), she is the director of Mercury Labs and the designer of the tachyon devices which allows any object to move at the speed of light. During seasons one and two, McGee has run-ins with Eobard Thawne involving her tachyon equipment and is aware of Barry Allen's secret. In season four (off screen), she is a member of Cisco Ramon's team to bring the Flash back from the Speed Force. Pays reprises the character from the 1990s TV series.
- Mick Rory / Heat Wave (portrayed by Dominic Purcell) - An arsonist and accomplice of Leonard Snart who uses a heat gun developed by Cisco capable of burning almost anything. However, Mick's obsession for maximum destruction and failure to think causes tensions with Snart tempted to kill him.
- According to Citizen Cold, Earth-X's version of Heat Wave died saving innocent lives.
- John Diggle / Spartan (portrayed by David Ramsey) - Oliver Queen's best friend and teammate. Ramsey stars as the character on Arrow.
- Kendra Saunders / Chay-Ara / Hawkgirl (portrayed by Ciara Renée) - A young woman who has been repeatedly reincarnated over the centuries. When provoked, her ancient warrior persona manifests itself, along with wings that grow out of her back. She is a potential love interest for Cisco.
- Felicity Smoak (portrayed by Emily Bett Rickards) - An information-technology genius and a member of Oliver Queen's team; later his wife. Also a good friend of Barry Allen. Rickards stars as the character on Arrow.
- Rickards also portrays the unnamed Earth-X version of the character, who is interned in a concentration camp under the Nazi regime.
- David Singh (portrayed by Patrick Sabongui) - A CCPD captain, and superior of Barry Allen, Joe West, Eddie Thawne, Patty Spivot and Julian Albert.
- Sabongui also portrays the Earth-2 version of the character who is a criminal.
- Henry Allen (portrayed by John Wesley Shipp) - Barry Allen's father. Shipp previously portrayed Barry Allen the 1990 television series. Henry was a respectable doctor before he was wrongfully convicted of murdering his wife Nora Allen and incarcerated in Iron Heights Prison after Eobard Thawne framed him. Only his son Barry, and later Joe West, believe his innocence. Throughout season one he learns that Barry is the Flash and is proud of his son. Henry serves as Barry's moral conscience in using these powers wisely, thus keeping Barry from being tempted by personal gains. In season two Henry is released from prison due to Eobard's confession to Nora's murder. However, he leaves Central City to seek a reclusive life as he believes that his presence could hold back Barry's duties as the Flash. He returns to counsel Barry and offer encouragement after his son's disastrous fight with Hunter Zolomon, then returns to seclusion. When Barry is de-powered Henry joins S.T.A.R. Labs to help in Barry's fight to save the world from Zoom. Henry is killed by Zolomon in order for Barry to relive the same tragedy he went through as a child.
- It is implied that the Earth-2 version of the character has a happy life.
- Shipp also portrays Jay Garrick, the Earth-3 version of the Flash. Zoom held Jay captive in a failed attempt to harness his speed, and was inspired to take up his persona and falsely operate as the Flash of Earth-2, even using Jay's name. To keep him from escaping, Zoom forced Jay to wear a mask that suppressed his speed and prevented him from talking. After Zoom's defeat, Barry rescues Jay, who travels with Harry Wells and Jesse Wells back to Earth-2. Jay adopts Hunter's Flash helmet as a symbol of hope, taking satisfaction in taking something from Zoom as Zoom had done to him. Jay learned from Harry that Henry Allen is his doppelgänger and Barry is Henry's son. Knowing this, Jay watches over Barry as a sympathetic yet stern mentor, and a friendship develops. He explains to Barry that time travel can have adverse consequences and that Barry must live with his mistakes. Jay also helps Barry get to terms with his father's death, and supports Barry since for Henry. Barry later seeks Jay's aid in battling Savitar; they banish Savitar to the Speed Force, though he later escapes with Jay taking his place. After being freed, Jay joins Team Flash in the final battle to defeat Savitar. Jay later returns to help Barry controls of his new Flashtime powers, and reveals that he plans to retire and trains a protégée to become his successor as the Flash.
- Regarding the difference in his portrayal of Garrick over Allen, Shipp "figured Jay is my version of Barry" from the 1990 series, adding, "I went back and I watched a couple of episodes of the 1990–91 version to kind of remind myself what I did. [Jay] is much more reminiscent of my Barry Allen from 25 years ago than my Henry Allen. I went back and I was amazed how much attitude my Barry Allen had in some situations. I went back and I picked up that thread and I brought it forward 25 years, and tried to weave it in."
- Grodd (voiced by David Sobolov) - A hyper-intelligent gorilla with telepathic powers as a result of being experimented on by General Eiling under the watch of Eobard Thawne. He is sent to the Gorilla City on Earth-2 by Flash and later plans an attack to Central City with an army of the gorillas like him. However, he is defeated by Flash, Kid Flash, Jesse Quick and Solovar, and imprisoned at A.R.G.U.S.
Introduced in season twoEdit
- Jesse Chambers Wells / Jesse Quick (portrayed by Violett Beane) - Based on the DC Comics character of the same name, Jesse is the daughter of Harry Wells from Earth-2. Like her father Jesse is a science prodigy, having five majors in college, including biochemistry. Zoom holds Jesse captive to extort Harry's cooperation until she is rescued by her father, Barry, Cisco, and Earth-2's Barry and Iris. With her father, Jesse seeks refuge on Earth-1 and she leaves for Opal City after discovering the lengths Harry will take to keep her safe. Jesse returns after her father is kidnapped and works with the S.T.A.R. Labs team. Jesse and Wally are affected by dark matter when Harry attempts to restore Barry's speed; Barry later brings her out of her coma. Following Zoom's defeat, Jesse returns to Earth-2 with her father. Months later Jesse exhibits speedster abilities and aspires to help people, though her father disapproves. After she helps Barry stop Magenta, Harry becomes more encouraging and has Cisco make her a speedster suit. Jesse and Harry return to Earth-2, where Jesse becomes Earth-2's speedster superhero under the name Jesse Quick. Jesse and Wally admit their feelings, and have a long-distance relationship until she breaks up with him.
- Hunter Zolomon / Zoom (portrayed by Teddy Sears, initially portrayed by Ryan Handley, voiced by Tony Todd) - A speedster from Earth-2 who is obsessed with becoming the only speedster in the multiverse and the main antagonist of season two. Executive producer Andrew Kreisberg said, in season one "with the Reverse-Flash, we just modulated Tom Cavanagh's voice, and this year we wanted to do something a little bit different [for Zoom]. Part of the mystery of the season is who or what is underneath the Zoom outfit, and so we wanted to do something like James Earl Jones as Darth Vader — this iconic voice coming out of this mask." Hunter was a traumatized child (portrayed by Octavian Kaul) that witnessed his mother's murder at his father's hands which triggered his bloodlust as a serial killer before he gained his powers from the particle-accelerator explosion on Earth-2. Dissatisfied, he sought to increase his speed with the Velocity serum but soon discovered it carried a fatal illness. Searching for a cure, he traveled the multiverse and captured Jay Garrick. Unsuccessful in stealing Jay's speed to cure himself, Hunter kept him imprisoned with a speed-dampening mask. Inspired to be both hero and villain, he used Jay's name as the fraudulent Flash of Earth-2 to instill false hope which he would take away as Zoom. Discovering Earth-1, he plotted to increase Barry's speed and then steal it, sending various metahumans from Earth-2 to fight the Flash while also infiltrating the team as Jay. Zoom extorts Harry Wells into physically stealing Barry's speed by kidnapping Jesse Wells. He also becomes Caitlin Snow's love interest. After succeeding in stealing Barry's speed, Zoom brings his army of Earth-2 metahumans to conquer Earth-1 and construct a device capable of destroying the other Earths in the multiverse, to ensure he remains the only speedster. Hunter seeks to corrupt Caitlin's mind into becoming like Earth-2 Killer Frost and then Barry's by killing Henry in the same spot Eobard killed his mother, convinced that they are similar because of their childhood traumas. However, Barry ultimately bests Hunter in their final fight and summons two Time Wraiths to punish him for his crimes against the timeline; they transform him into the Black Flash, a corpse-like creature enslaved to the Speed Force. Subjugated to the Time Wraiths, the Black Flash made occasional appearances to hunt time remnants such as Savitar, before being killed by the Earth-1 Killer Frost.
- Patty Spivot (portrayed by Shantel VanSanten) - based on the DC Comics character of the same name, she is Joe West's new protégée and partner, a member of the metahuman task force at CCPD along with Cisco, and a love interest of Barry Allen. Her father was murdered by Mark Mardon during a bank robbery prior to the particle accelerator's explosion, leaving Patty determined to stop metahuman criminals. She believes that having superhuman power brings out the best or the worst in people, and acknowledges the Flash's heroism. Her hatred for Mark stems from survivor's guilt; when she was a teenager, she was supposed to make the deposit at the bank where her father died. When Patty gets her chance at revenge on Mark, the Flash persuades her to choose justice over vengeance. She leaves Central City to pursue her studies in the Forensic Science program at Midway City University. She also deduces Barry's secret identity and offers to stay if Barry confirms his feelings for her, but Barry admits nothing, not wanting to stop Patty from pursuing her studies. Patty surreptitiously does get Barry to reveal the Flash persona to her as she departs Central City, thus ending their relationship on good terms.
- Francine West (portrayed by Vanessa A. Williams) - Iris and Wally West's mother and Joe West's estranged wife. Francine abandoned her family four years prior to Joe taking Barry Allen in, out of guilt of endangering Iris through her drug abuse. After settling in Keystone City and following Wally's birth, Francine becomes sober from her addiction and a good mother to her son. After being diagnosed with MacGregor's syndrome (a terminal illness related to substance abuse), she tries to reconcile with her family and to entrust Wally to them before she dies. Joe and Iris forgive Francine on her deathbed and accept Wally as part of the family. Savitar later uses Francine's likeness to agitate Wally.
Introduced in season threeEdit
- Kara Zor-El / Kara Danvers / Supergirl (portrayed by Melissa Benoist) - Supergirl is Barry Allen's friend and ally from another universe, who is an extraterrestrial superhero from the doomed planet Krypton residing on Earth-38. They met after Barry accidentally breached the dimensional barrier separating his and Kara's universes when testing a tachyon device (see "Worlds Finest"). Supergirl proves herself as a trusted ally after she travels to Earth-1 to help its heroes resist an alien invasion, and Oliver Queen and Barry entrusted her with a device that enables her to travel and communicate between her universe and theirs. She and her allies occasionally join Barry and other Earth-1 heroes on missions. Benoist reprises the role from Supergirl.
- Cynthia / Gypsy (portrayed by Jessica Camacho) - Abounty hunter from Earth-19 who has similar powers to Vibe.
- Tracy Brand (portrayed by Anne Dudek) - An eccentric doctoral student who studies speedsters with "a smorgasbord of quirky idiosyncrasies". Introduced in season three, she is targeted by Savitar due to her future self aiding Savitar's defeat in 2021. Tracy later aligns herself with Team Flash to fulfill her destiny against Savitar and becomes a love interest of H.R. Wells in the process. She later witnesses H.R. being killed by Savitar and hates the rogue time-remnant. In season four, Tracy is one of the members of Cisco Ramon's team to bring Barry Allen back from the Speed Force and implies to have received her PhD and now working as a scientist.
- Julian Albert Desmond / Doctor Alchemy (portrayed by Tom Felton) - A wealthy scientist and fellow CSI at the CCPD. The character was originally known as Julian Dorn. In season three, he works with Barry Allen though they didn't initially get along. As Alchemy, he is an acolyte of Savitar who unlocks the potential in metahumans from the Flashpoint timeline in preparation for a future event. Julian is not aware he is Alchemy, and that he only assumes the guise while being unconsciously possessed by Savitar. Tobin Bell voices Doctor Alchemy. In order to fix what he made as Alchemy, Julian decides to join the team to help against Savitar and other metahumans. Julian and Caitlin Snow develop a romantic relationship. In season four, it's revealed that Julian returned to the United Kingdom.
Introduced in season fourEdit
- Gregory Wolfe (portrayed by Anthony Harrison in season one, Richard Brooks in season four) - The corrupt warden of Iron Heights Prison who has connections to Blacksmith. When Barry has been framed for Clifford DeVoe's "murder" and sentenced to Iron Heights, Warden Wolfe incarcerates him in Henry Allen's former cell. After his hidden camera enabled him to figure out that Barry Allen is Flash, Wolfe has him transferred to Iron Heights' metahuman wing. Wolfe is killed by Thinker when he steals the abilities of the metahumans that Wolfe was going to sell to Blacksmith.
- Marlize DeVoe / Mechanic (portrayed by Kim Engelbrecht) - A highly intelligent engineer who designs devices for her husband, Clifford DeVoe. Initially, she was loyal to him and would join him in harassing and mocking Team Flash every time they score a victory over the latter, but as DeVoe's original personality begins to be replaced by increasing cruelty and arrogance, she comes to realize that the husband she loved was gone and helps Team Flash defeat him in the final battle.
- Sharon Finkle (portrayed by Donna Pescow) - A therapist who Barry and Iris visit, as do other members of Team Flash.
- Amunet Black / Blacksmith (portrayed by Katee Sackhoff) - A crimelord who operates an underground black market of metahuman supervillains. She is a metahuman who has the power to manipulate metal, but prefers using special metal shards when in combat. Blacksmith convinced Caitlin Snow to work with her for the promise of a cure. Caitlin later leaves and Blacksmith who repeatedly tries to coerce Caitlin back to her side. Blacksmith is tipped by Warden Wolfe who lets her know that he has a big catch (i.e.: Barry Allen). Blacksmith was knocked out when Thinker attacked. Team Flash later formed a truce with Blacksmith when her henchman Norvok plotted to sell some of her metal. During this time, she theorized that Caitlin couldn't access Killer Frost due to a placebo effect. Flash persuaded Blacksmith not to kill Norvok. After making a device for Team Flash to use when Thinker activates his Enlightenment device, Blacksmith forms metals around her and escapes in a metallic tornado.
Introduced in season fiveEdit
The following is a supplementary list of guest stars, some recurring, who appear in lesser roles. The characters are listed, in alphabetical order by actor, by the season in which they first appeared.
Introduced in season oneEdit
- Roy Bivolo / Prism / Rainbow Raider (portrayed by Paul Anthony) - A metahuman with the ability to induce an uncontrollable rage in others. Bivolo infects and sends Barry Allen on a rage fit throughout the city which is only calmed by the Arrow, his team and S.T.A.R. Labs. After they defeat Bivolo, he was held in the particle accelerator prison before being set free by Leonard Snart.
- Gideon (voiced by Morena Baccarin) - An A.I. assistant created by Barry Allen in the original future timeline for a later purpose, and it somehow came into Eobard Thawne's possession for his own plans against Barry. It is programmed to be loyal to both Barry and Eobard.
- Quentin Lance (portrayed by Paul Blackthorne) - A police captain in the Starling City Police Department. He helps Joe West and Cisco discover Harrison Wells's corpse, and in the process Quentin and Joe become friends due to the similarities between them as police detectives and fathers. Blackthorne stars as the character on Arrow.
- Bre Blair portrays Tess Morgan, the wife of Harrison Wells (Earth-1 version) and another victim of Eobard Thawne.
- Kyle Nimbus / Mist (portrayed by Anthony Carrigan) - A metahuman who can turn himself into a poisonous mist and an enemy of Joe West. He was held in the S.T.A.R. Labs prison before being set free by Leonard Snart.
- Dinah Laurel Lance / Black Canary (portrayed by Katie Cassidy) - A Starling City assistant district attorney and vigilante. Cisco Ramon provides Laurel with an ultrasonic collar using components from both Sara Lance (Canary) and Hartley Rathaway's sonic weapons, improving Laurel's tactics with sonic weaponry. Cassidy stars as the character on Arrow.
- Cassidy also portrays the Earth-2 version of the character, Dinah Laurel Lance / Black Siren, a villainous metahuman and one of Zoom's lieutenants.
- Cassidy also portrays the Earth-X version of Dinah Laurel Lance, the unrequited lover of Dark Arrow and a remnant of the Earth-X regime who came to Earth-1 to avenge Dark Arrow. She kidnapped Fallout from an A.R.G.U.S. transport and took him to the CCPD in order to use her voice to cause him to explode. With help from Citizen Cold, Flash defeated Siren-X and helped to prevent Fallout from exploding.
- Anthony Bellows (portrayed by Vito D'Ambrosio) - A former police officer who became Mayor of Central City. His corruption was later exposed by Flash and Elongated Man and he was arrested by Joe West. While incarcerated at Iron Heights, he became a powerful figure where he gained lackeys and threatened David Ratchet. When Barry Allen was incarcerated at Iron Heights, he played cards with Bellows and secretly used his abilities to beat him in a card game. Bellows was succeeded as mayor by Van Buren.
- Tony Woodward / Girder (portrayed by Greg Finley) - A metahuman with the ability to turn his skin into steel. He bullied Barry Allen and Iris West when they were children. In season one he goes after Iris but is eventually defeated by the Flash.[clarification needed] He is later killed by Farooq during Barry's temporary power loss. Harry Wells's particle-accelerator explosion, which returns Barry's speed, affects Woodward who returns as a reanimated corpse targeting Iris. He is later defeated again by the Flash.
- Bette Sans Souci / Plastique (portrayed by Kelly Frye) - A former war veteran and metahuman with the ability to explode anything she touches. She is shot by General Wade Eiling and dies but her body turns into a bomb so Barry is forced to throw it into the ocean where it detonates safely away from the city.
- Dante Ramon (portrayed by Nicholas Gonzalez) - Cisco Ramon's older unambitious brother. Though they originally have a strained relationship due to their respective jealousies, they later try to reconcile their relationship. Barry resets the timeline to undo Flashpoint, resulting in Dante being killed by a drunk driver, threatening Cisco and Barry's relationship.
- Axel Walker / Trickster (portrayed by Devon Graye) - A young copycat of the original Trickster (James Jesse) who is his father.
- James Jesse / Trickster (portrayed by Mark Hamill) - A terrorist serving a life sentence in Iron Heights. Barry and Joe seek his aid to stop Axel Walker, a new Trickster emulating him. After his first defeat by the Flash, Jesse becomes obsessed with the speedster. Hamill reprises the role from the 1990 television series.
- Hamill also portrays the Earth-3 version of the character, who is Jay Garrick's enemy.
- Clarissa Stein (portrayed by Isabella Hofmann) - Martin Stein's wife.
- Samantha Clayton (portrayed by Anna Hopkins) - The mother of Oliver Queen's unknown son William. She lives in Central City with her son after she lied to Oliver that she miscarried. Hopkins appears as the character on Arrow.
- Jake Simmons / Deathbolt (portrayed by Doug Jones) - A metahuman with the ability to harness and weaponize plasma energy, reprising his role from Arrow. As Simmons was not in Central City when the particle accelerator exploded, he gained his powers through other means. He is killed by Leonard Snart in "Rogue Air".
- Brie Larvan (portrayed by Emily Kinney) - A female version of Bug-Eyed Bandit. She is a narcissistic technical genius and killer who becomes a rival to Felicity Smoak.
- William Tockman / Clock King (portrayed by Robert Knepper)) - A master criminal. In season one of The Flash, Tockman took hostage of several civilians at CCPD. Knepper reprises the role from Arrow.
- Hartley Rathaway / Pied Piper (portrayed by Andy Mientus) - In season one, he is depicted as Eobard Thawne's former protégé and an embittered genius who used to work at S.T.A.R. Labs. The particle accelerator explosion gives him superhuman hearing but he needs custom-made hearing aids to help control his new power; he is also armed with sonic gloves. Rathaway is a rival of Cisco. Events are altered in season two resulting in Hartley becoming an ally to Team Flash and having reconciled with his parents.
- Hannibal Bates / Everyman (portrayed by Martin Novotny) - A metahuman with the ability to shapeshift, changing his appearance to resemble others. Due to his powers, several other actors portrayed the character's various disguises (Chris Webb, Barbara Wallace, Laiken Laverock and Maxine Miller), including various series regulars.
- Shawna Baez / Peek-a-Boo (portrayed by Britne Oldford) - A metahuman with the ability to teleport. She was being held in the S.T.A.R. Labs prison before being set free by Leonard Snart. She briefly reappears in season four's premiere where she is recaptured by Kid Flash and Vibe.
- Farooq Gibran / Blackout (portrayed by Michael Reventar) - A metahuman with the power to harness electricity. Farooq blames Eobard Thawne for his friends' deaths, resulting from his uncontrollable powers. He overloads himself and dies, with his body held in the S.T.A.R. Labs prison.
- Jason Rusch (portrayed by Luc Roderique) - A Hudson University graduate student and member of Martin Stein's research team on the F.I.R.E.S.T.O.R.M. project.
- Clyde Mardon (portrayed by Chad Rook) - A bank robber and murderer who was turned into a metahuman with the ability to control the weather of his surroundings. He is shot and killed by Joe West in the pilot episode.
- Ray Palmer / Atom (portrayed by Brandon Routh) - A scientist, inventor and businessman who is the CEO of Palmer Technologies. He becomes friends with Cisco due to their shared fondness for advanced technologies. Routh recurs as the character on Arrow and is a regular on Legends of Tomorrow.
- Simon Stagg (portrayed by William Sadler) - An industrialist and philanthropist who is fascinated with the Flash (Barry Allen) to the point of exploitation. He is killed by Eobard Thawne.
- Danton Black / Multiplex (portrayed by Michael Christopher Smith) - A scientist-turned-metahuman with an ability to duplicate himself. He falls out a window trying to attack the Flash after being defeated, but when the Flash tries to pull him up, Multiplex lets himself fall to his death.
Introduced in season twoEdit
- Lyla Michaels (portrayed by Audrey Marie Anderson) - An A.R.G.U.S. agent and John Diggle's wife. In season two, she travels to Central City to help Barry Allen track down King Shark who escapes from A.R.G.U.S. In season three, Lyla distrusts Barry due to the alteration of her married life when the timeline reset. Anderson portrays the character on Arrow.
- Demore Barnes portrays Henry Hewitt, based on the DC Comics character Tokamak. Hewitt is a scientist who was affected by the particle-accelerator explosion and is a potential candidate as Firestorm's other half. Proven to be unsuitable, however, he gets powers from the attempted merge and tries to kill Caitlin Snow and Jefferson Jackson. He is defeated by the Flash (Barry Allen) and the new Firestorm through their combined efforts and is held in the S.T.A.R. Labs prison.
- Barnes also portrays the Earth-2 version of the character, a kind scientist at S.T.A.R. Labs who works under Harry Wells.
- Malcolm Merlyn / Dark Archer (portrayed by John Barrowman) - Malcolm is the leader of the League of Assassins, the archenemy of Oliver Queen, and the biological father of Thea Queen; he provides information to both Oliver and Barry Allen about Vandal Savage. Barrowman stars as the character on Arrow.
- Scott Evans (portrayed by Tone Bell) - The new editor at Central City Picture News after the death of Eric Larkin and a love interest for Iris West.
- Albert Rothstein / Atom Smasher (portrayed by Adam Copeland) - Based on the DC Comics character of same name, Rothstein of Earth-2 has incredible strength and the ability to grow to an enormous size. He dies of radiation poisoning after battling the Flash. It is revealed that he was sent to kill the Flash at the behest of Zoom.
- Copeland also portrays the Earth-1 version of the character, a worker for a nuclear plant that is presumptively killed by Atom Smasher.
- Vandal Savage (portrayed by Casper Crump) - A 6,000-year-old immortal who has manipulated leaders throughout history in an attempt to gain dominion over the entire world.
- Russel Glosson / Turtle (portrayed by Aaron Douglas) - A metahuman who can slow time. Following his defeat by the Flash, he is killed by Harry Wells.
- Jefferson "Jax" Jackson / Firestorm (portrayed by Franz Drameh) - A former athlete who was injured and works as an auto mechanic. He replaces Ronnie Raymond as Firestorm's other half with Martin Stein.
- Joey Monteleone / Tar Pit (portrayed by Marco Grazzini) - A metahuman with the ability to transform into molten asphalt.
- Shay Lamden / King Shark (voiced by David Hayter) - Based on the DC character of the same name, King Shark is a humanoid metahuman shark from Earth-2 sent by Zoom to kill The Flash. Kreisberg said that the character was originally introduced in The Flash: Season Zero comic because they would not have been able to create him for the series. He added that in his initial appearance it "was a very expensive 30 seconds of the show", and the producers did not think they could afford to do a whole episode with him, "so the idea was that he was one of Zoom's minions".
- Carter Hall / Khufu / Hawkman (portrayed by Falk Hentschel) - Based on the DC Comics character of the same name, Hall is the latest reincarnation of an Egyptian prince who is fated to reincarnate throughout time along with his soulmate, Hawkgirl.
- Thea Queen / Speedy (portrayed by Willa Holland) - Oliver Queen's half-sister who began to operate as a vigilante, replacing Roy Harper as "Speedy". Holland stars as the character on Arrow.
- Lewis Snart (portrayed by Michael Ironside) - A former police officer, career criminal, and the estranged abusive father of Leonard Snart (Captain Cold) and Lisa Snart (Golden Glider) who returns to Central City with a plan that endangers both of his children. He is killed by Leonard out of revenge.
- Damien Darhk (portrayed by Neal McDonough) - A former member of the League of Assassins and the leader of his own clandestine group, H.I.V.E. McDonough appears as the character on Arrow.
- Eliza Harmon / Trajectory (portrayed by Allison Page) - An "exceptionally bright scientist with a split personality a la Jekyll and Hyde" from Mercury Labs, based on the DC Comics character of the same name. Harmon is the first female speedster in Central City. Faster than the Flash, she has the male speedster blamed for her super-speed crimes. Overusing Velocity 9, which she had helped Caitlin Snow develop, she runs so fast that she disintegrates.
- Floyd Lawton (portrayed by Michael Rowe) - On Earth-2, Floyd Lawton is a CCPD detective and partner of Iris West-Allen. He is adept at aiming and handling a gun, earning him the nickname "Deadshot". Rowe appeared as the Earth-1 version of the character, the assassin Deadshot, on Arrow.
- Adam Fells / Geomancer (portrayed by Adam Stafford) - A metahuman with the ability to create earthquakes.
- Griffin Grey (portrayed by Haig Sutherland) - Based on the DC Comics character of the same name, Griffin is a metahuman with super-strength who demands a cure for his terminal progeroid sickness from Harry Wells, mistaking Harry for the Earth-1 imposter Eobard Thawne. The progeroid sickness is the side-effect of his powers. During his fight with Flash, Griffin dies from the final parts of his metahuman side-effects and regresses back to his original age upon his death.
- Eddie Slick / Sand Demon (portrayed by Kett Turton) - Based on the DC Comics character of the same name, Slick is a metahuman from Earth-2 has the ability to turn part of his body into sand. He has had encounters with "The Flash" (Hunter Zolomon) on Earth-2 and is killed after the Flash (Barry Allen) throws lightning to his chest, shattering him like glass.
- The Earth-1 version of the character, also portrayed by Turton, is also a career criminal as an arsonist but not a metahuman.
Introduced in season threeEdit
- Eve Teschmacher (portrayed by Andrea Brooks) - James Olsen's assistant at CatCo Media on Earth-38. Brooks reprises her role from Supergirl.
- Lily Stein (portrayed by Christina Brucato) - The scientist daughter of Martin Stein.
- Judge Hankerson (portrayed by Ken Camroux-Taylor) - A judge in Central City.
- Music Meister (portrayed by Darren Criss) - An extra-dimensional being with the ability to hypnotize people with his eyes, sending them into a self-created dream world, which also allows him to syphon their abilities. In the case of Flash and Supergirl, he sent them into a reality that evokes the traits of gangster films and musical films.
- Sam Scudder / Mirror Master (portrayed by Grey Damon) - A metahuman who has the ability to travel through any reflective surface and was once a member of Leonard Snart's gang before the particle accelerator's explosion.
- Abra Kadabra (portrayed by David Dastmalchian) - A time-traveling criminal from a distant future whose advanced technological powers seem like magic.
- Solovar (voiced by Keith David) - A sentient albino gorilla who is the leader of Gorilla City on Earth-2.
- Julio Mendez (portrayed by Alex Désert) - A musician. In the Flashpoint timeline, he is a captain of the CCPD. Désert reprises his role from the 1990 series of the same name.
- Tom Patterson (portrayed by Greg Grunberg) - A detective of Central City.
- J'onn J'onzz / Martian Manhunter (portrayed by David Harewood) - J'onn is an extraterrestrial superhero who is the last Green Martian and also the director of Department of Extranormal Operations (DEO), residing on Earth-38. Harwood reprises his role from Supergirl.
- Winslow "Winn" Schott, Jr. (portrayed by Jeremy Jordan) Winn is a friend of Supergirl and son of the criminal Toyman whom Barry also befriended who works for the DEO as its desk agent, residing on Earth-38. Jordan reprises his role from Supergirl.
- Jordan also portrays the Earth-X version of the character named General Schott, introduced during "Crisis on Earth-X" crossover, who is the leader of the resistance against the New Reich.
- Frances "Frankie" Kane / Magenta (portrayed by Joey King) - Based on the DC Comics character of the same name, Kane is a metahuman with the ability to manipulate magnetism. Frankie got her powers from Dr. Alchemy revealing she was a metahuman in Flashpoint, and is normally a nice and submissive girl, but has a second aggressive personality "Magenta" as a result of Alchemy's power.
- Edward Clariss / Rival (portrayed by Todd Lasance) - Based on the DC Comics character of the same name, Rival is a black-suited speedster who is the archenemy of Kid-Flash in the Flashpoint timeline. Clariss attempts to fight Kid-Flash and the Flash (Barry Allen). Despite severely injuring Kid-Flash, he is subdued by Barry and killed by Joe West. In the restored timeline, a living Clariss is given the speed that he had in the Flashpoint timeline by Doctor Alchemy. As the Rival, he tries to kill Barry in revenge for taking his powers away from him, but is defeated by Barry and Cisco. He is later murdered by Savitar.
- Sara Lance / White Canary (portrayed by Caity Lotz) - The only sister of Laurel Lance. She is a Star City vigilante and former League of Assassins member suffering from a bloodlust after being resurrected by the mystical Lazarus Pit, and also the acting captain of the timeship Waverider and leader of the Legends during Rip Hunter's absence. The character is partially based on the Black Canary and was first introduced on Arrow. Lotz recurs as the character on Arrow and is a regular on Legends of Tomorrow.
- Accelerated Man (portrayed by Sean Poague) - A Speed Force conduit and Earth-19's version of the Flash.
- Rosalind "Rosa" Dillon (portrayed by Ashley Rickards) - A female version of the Top. Dillon is a metahuman with the ability to produce spinning vertigo though eye-contact.
- Dr. Carla Tannhauser (portrayed by Susan Walters) - Caitlin's estranged mother, a biomedical engineer, and CEO of a major research company.
- Mon-El (portrayed by Chris Wood) - An extraterrestrial prince from the planet Daxam with similar powers to Supergirl. He is Supergirl's romantic partner, residing on Earth-38. Wood reprises his role from Supergirl.
- Lucious Coolidge / Heat Monger (portrayed by Richard Zeman) - A flamethrower-wielding villain who committed crimes of arson at the time when Heat Wave was "off the grid."
Introduced in season fourEdit
- Jaco Birch (portrayed by Max Adler) - A man who received pyrokinetic powers when Matthew Kim accidentally transferred them from Erik Frye. With help from Kim, a Flash-powered Iris formed a tidal wave to defeat Jaco who is arrested by Joe West and remanded to Iron Heights.
- Weeper (portrayed by Matt Afonso) - A metahuman whose tears, when consumed, induces psycho-active drug-like effects from his exposure to the dark matter while riding a bus. After he was freed from Blacksmith, Weeper was approached by Clifford DeVoe who has plans for him.
- Rebecca Sharpe / Hazard (portrayed by Sugar Lyn Beard) - A metahuman with the power to manipulate luck, giving herself good luck while jinxing everyone else. While unlucky in her early life, she gained her powers after she was exposed to the dark matter while riding a bus. Her body is later taken over by Thinker.
- Zoey Clark / Prank (portrayed by Corinne Bohrer) - the Trickster's (James Jesse) one time partner-in-crime and mother of their son Axel Walker, who is the second Trickster. Bohrer reprises the role from the 1990 television series.
- Janet Petty / Null (portrayed by Benthany Brow) - A female petty criminal who was exposed to the dark matter energy while riding a bus. She gained the ability of gravity manipulation. Janet's aliases include Jeannie Williams, Jesse Rivers, Judy Newton, Jackie Plummer, Jordan Smith, and Jane Linska. With help from Elongated Man, Flash defeated Null and remanded her to the S.T.A.R. Labs prison. However, she became Thinker's victim.
- Ramsey Deacon / Kilg%re (portrayed by Dominic Burgess) - A metahuman and former computer programmer who can control and manipulate technology after being exposed to dark matter while riding a bus. He seeks revenge on his business partners for stealing his idea for the Kilg%re app. Kilg%re was defeated by Flash and is remanded to Iron Heights, where DeVoe later acquires his powers.
- David "Big Sir" Ratchet (portrayed by Bill Goldberg) - An inmate at Iron Heights Prison who was framed for the death of a Mercury Labs security guard by Dwarfstar. After Barry hears that Dwarfstar won't confess to the crime, Barry used his abilities to relocate David to Jaiju, China.
- Van Buren (portrayed by Kendall Cross) - The Mayor of Central City who succeeded Anthony Bellows.
- Mina Chayton (portrayed by Chelsea Kurtz) - A cultural anthropology professor who is a female version of DC Comics villain Black Bison. She is a metahuman who can bring inanimate objects to life due to exposure to dark matter while riding a bus.
- Alex Danvers (portrayed by Chyler Leigh) - The adoptive sister of Kara Danvers and second-in-command of the DEO. Leigh reprises her role from Supergirl.
- Izzy Bowin (portrayed by Miranda MacDougall) - A female country and western fiddler who is a female version of DC Comics villain Fiddler. She was on the bus and exposed to the dark matter energy, gaining the ability to deliver powerful sounds from her instrument. Despite attempts by the Flash and the Elongated Man, the Thinker takes over Izzy's body and power.
- Neil Borman / Fallout (portrayed by Ryan Alexander McDonald) - A truck driver that was affected by the dark matter released from the Speed Force that gave him radiation abilities.
- Sylbert Rundine / Dwarfstar (portrayed by Derek Mears) - A metahuman who can shrink or enlarge anything. He was responsible for shooting a security guard during a robbery at Mercury Labs which left the blame on David Ratchet. Although he was defeated by Elongated Man and Vibe, he refused any offered deal to confess to framing David Ratchet. His powers are later stolen by Thinker.
- Matthew Kim / Melting Point (portrayed by Leonardo Nam) - A man who was exposed to the dark matter energy while riding a bus. He gained the ability to transfer a metahuman's abilities to another person which he accidentally did to Flash and Iris West. After the incident with Jaco Birch, Matthew undoes the transfers and sides with Flash. Thinker in Izzy Bowen's body broke into S.T.A.R. Labs and took Melting Point's powers.
- Edwin Gauss / Folded Man (portrayed by Arturo Del Puerto) - A man who was exposed to dark matter energy while riding a bus and gained the ability to create portals to pocket dimensions or "folds". His body and powers were taken over by Thinker in a lead-up to Thinker taking over Elongated Man's powers.
- Dominic Lanse / Brainstorm (portrayed by Kendrick Sampson) - One of the bus metahumans who is a telepath. Dominic was in the captivity of Amunet Black before being rescued by Team Flash. However, he is later recaptured by Amunet and sold to DeVoe who used his technology to harness Dominic's abilities and take over his body. DeVoe later abandoned Dominic's body, presumably leaving him comatose.
- Norvok (portrayed by Mark Sweatman) - A henchmen of Blacksmith and a metahuman whose prosthetic right eye hides a tentacle-like appendage he uses as a weapon. He tried to sell some of Blacksmith's metal to other crime lords, and when she defeats him she cut off the snake-like creature and he is arrested by Joe West.
- Ray Terrill / The Ray (portrayed by Russell Tovey) - A displaced hero on Earth-X.
- Josh / Breacher (portrayed by Danny Trejo) - A bounty hunter from Earth-19 and the father of Gypsy, who possesses similar powers to his daughter and Vibe.
- Anton Slater (portrayed by Mark Valley) - Central City's district attorney who prosecutes Barry for his alleged murder of Clifford DeVoe.
- Gustin also portrayed Hannibal Bates / Everyman disguised as his character in season one, Barry Allen's Earth-2 doppelgänger in season two, and Savitar's true form in season three.
- Patton also portrayed Hannibal Bates / Everyman disguised as her character in season one and Iris West-Allen's Earth-2 doppelgänger in season two.
- Panabaker also portrayed Hannibal Bates / Everyman disguised as her character in season one and Killer Frost's Earth-2 doppelgänger in season two.
- Cosnett also portrayed Hannibal Bates / Everyman disguised as his character in season one.
- Valdes also portrayed his character's Earth-2 doppelgänger Reverb in season two.
- Cavanagh has portrayed his character's various depictions throughout the series: Eobard Thawne / Reverse-Flash disguised as his character in season one and the "Crisis on Earth-X" crossover special, "Harry" Wells of Earth-2 from seasons two to four, "H.R." Wells of Earth-19 during season three, Hannibal Bates / Everyman disguised as his character in season one, the additional doppelgängers of his character throughout the series, and another iteration in season five.
- Martin also portrayed Joseph's West's Earth-2 doppelgänger in season two, and Ralph Dibny / Elongated Man disguised as his character in season four.
- Lonsdale is credited in the main cast through "Don't Run" and as a guest star on "We Are the Flash".
- After "Don't Run", Sandilands is credited in the main cast only in the episodes that his character's original likeness appears.
- Sawyer also portrayed Clifford DeVoe / The Thinker in his character's body in season four.
- Goldberg, Lesley (September 13, 2013). "'Glee' Star Set as CW's Flash". The Hollywood Reporter. Archived from the original on September 14, 2013. Retrieved September 13, 2013.
- Burlingame, Russ (November 15, 2016). "The Flash: First Look at Savitar". Comicbook.com. Archived from the original on November 16, 2016. Retrieved November 16, 2016.
- Abrams, Natalie (February 9, 2016). "The Flash: 13 most shocking moments from Team Flash's trip to Earth-2". Entertainment Weekly. Archived from the original on February 12, 2016. Retrieved February 9, 2016.
- Andreeva, Nellie (February 4, 2014). "Candice Patton Cast In CW Pilot 'The Flash'". Deadline Hollywood. Archived from the original on February 7, 2014. Retrieved February 4, 2014.
- Andreeva, Nellie (January 24, 2014). "'Rick Cosnett & Danielle Panabaker To Co-Star In CW Pilot 'The Flash'". Deadline Hollywood. Archived from the original on January 26, 2014. Retrieved January 24, 2014.
- Prudom, Laura (July 9, 2014). "'The Flash': Robbie Amell Cast as Firestorm". Variety. Archived from the original on July 13, 2014. Retrieved July 9, 2014.
- Cosnett, Rick [@RickCosnett] (January 16, 2017). "Ok, hate to tease you but now I can say it: I'm coming back on #TheFlash Photo credit @HarveyHouseP @SpencerAHarvey @lloydharvey" (Tweet). Archived from the original on January 25, 2017. Retrieved June 8, 2017 – via Twitter.
- Staley, Brandon (August 30, 2016). "Rick Cosnett Nearly Played Jay Garrick On CW's Flash". Comic Book Resources. Archived from the original on September 2, 2016. Retrieved August 30, 2016.
- Andreeva, Nellie (February 4, 2014). "Carlos Valdes Cast In CW's 'The Flash', Elena Kampouris In NBC's 'Odyssey'". Deadline Hollywood. Archived from the original on February 10, 2014. Retrieved February 4, 2014.
- Nededog, Jethro (February 10, 2014). "'Ed' Star Tom Cavanagh Joins CW's 'Flash' Pilot". The Wrap. Archived from the original on March 5, 2014. Retrieved February 10, 2014.
- "TV Legends: Was Flash's Harrison Wells Based On a Comic Character?". Comic Book Resources. Archived from the original on October 11, 2016. Retrieved October 11, 2016.
- Goldberg, Lesley (January 21, 2014). "CW's 'Flash' Adds Jesse L. Martin". The Hollywood Reporter. Archived from the original on January 22, 2014. Retrieved January 21, 2014.
- Beedle, Tim (May 14, 2014). "First Look: Arrow Takes Aim at The Flash (Updated: Watch the Full Five-Minute Trailer Now!)". DC Comics. Archived from the original on May 15, 2014. Retrieved May 14, 2014.
- Goldman, Eric (August 5, 2015). "The Flash: Wally West Cast for Season 2". IGN. Archived from the original on August 5, 2015. Retrieved August 5, 2015.
- Mahadeo, Kevin (October 27, 2015). "Kreisberg & Panabaker on Latest "Flash" Developments and West Family Revelations". Comic Book Resources. Archived from the original on October 29, 2015. Retrieved October 28, 2015.
- Abrams, Natalie (September 10, 2015). "The Flash boss breaks down new season 2 characters". Entertainment Weekly. Archived from the original on September 12, 2015. Retrieved September 12, 2015.
- Gelman, Vlada (July 12, 2016). "The Flash First Look: Meet Kid Flash!". TV Line. Archived from the original on July 13, 2016. Retrieved July 12, 2016.
- Damore, Meagan (October 24, 2017). "The Flash: [Spoiler] Leaves the Team – And Central City". Comic Book Resources. Retrieved October 25, 2017.
- Marston, George. "Keiynan Lonsdale Confirms He's Leaving Kid Flash Role". Newsarama. Newsarama. Retrieved 14 June 2018.
- Abrams, Natalie (December 7, 2015). "The Flash stars talk Wally West introduction". Entertainment Weekly. Archived from the original on December 9, 2015. Retrieved December 8, 2015.
- Abrams, Natalie (July 22, 2017). "The Flash casts The 100 alum as The Thinker, adds Danny Trejo". Entertainment Weekly. Retrieved July 25, 2017.
- Petski, Denise (July 31, 2017). "'The Flash': Hartley Sawyer To Play Elongated Man In Season 4". Deadline Hollywood. Archived from the original on July 31, 2017. Retrieved July 31, 2017.
- Erao, Matthew. "The Flash Introduces Elongated Man in 'Elongated Journey Into Night'". Screen Rant. The Premium Network. Retrieved October 14, 2017.
- Abrams, Natalie (May 22, 2018). "The Flash boss on that Mystery Girl reveal, new season 5 threat". Entertainment Weekly. Retrieved May 23, 2018.
- Cardona, Ian (July 21, 2018). "The Flash: Barry & Iris' Daughter Is Exactly Who We Thought (Sort Of)". CBR. Retrieved July 21, 2018.
- Abrams, Natalie (January 4, 2016). "The Flash: Robbie Amell returning — but there's a twist!". Entertainment Weekly. Archived from the original on January 4, 2016. Retrieved January 4, 2016.
- "Exclusive: The Flash's Pilot Features an Arrow Crossover!". TV Guide. May 15, 2014. Archived from the original on May 17, 2014. Retrieved May 15, 2014.
- Damore, Meagan (November 10, 2015). ""The Flash" Introduces Earth-2's Green Arrow, New Obstacle for Barry". Comic Book Resources. Archived from the original on August 5, 2016. Retrieved August 22, 2016.
- Ng, Philiana (August 8, 2014). "Clancy Brown has joined The CW's "Arrow" spinoff as a powerful comic-book character". The Hollywood Reporter. Archived from the original on August 9, 2014. Retrieved August 8, 2014.
- "'The Flash' Casting: Victor Garber To Recur As Dr. Martin Stein". Deadline Hollywood. October 9, 2014. Archived from the original on October 10, 2014. Retrieved October 9, 2014.
- Andreeva, Nellie (February 24, 2014). "Charlie Weber Cast In 'How To Get Away'; The Flash Gets Mother". Deadline Hollywood. Archived from the original on March 2, 2014. Retrieved February 25, 2014.
- "Roger Howarth Joins The Flash; Ryan Hurst In Bates Motel". Deadline Hollywood. October 20, 2014. Archived from the original on March 20, 2015. Retrieved March 17, 2015.
- Goldberg, Lesley (October 27, 2014). "'The Flash' Enlists 'Vampire Diaries' Alum as Key DC Comics Character (Exclusive)". The Hollywood Reporter. Archived from the original on October 29, 2014. Retrieved October 27, 2014.
- Wickline, Dan (October 27, 2014). "Malese Jow Added To The Flash As Potential Love Interest". Bleeding Cool. Archived from the original on January 20, 2015. Retrieved January 28, 2015.
- Ausiello, Michael (August 13, 2015). "Ask Ausiello: Spoilers on NCIS, X-Files, Grey's Anatomy, Arrow, Flash, Castle, Bones, Criminal Minds and More". TVLine. Archived from the original on August 13, 2015.
- White, Brett (October 29, 2015). "New Australian "Flash" Promo Illuminates Dr. Light's Identity". Comic Book Resources. Archived from the original on October 31, 2015. Retrieved October 30, 2015.
- Couch, Aaron (March 31, 2015). "The Flash EP and Mark Hamill on Harrison Wells Shocker, 'Star Wars' Shoutout". The Hollywood Reporter. Archived from the original on April 3, 2015. Retrieved April 1, 2015.
- Abrams, Natalie (January 7, 2015). "'The Flash' taps Liam McIntyre as new Weather Wizard". Entertainment Weekly. Archived from the original on January 8, 2015. Retrieved January 7, 2015.
- Fowler, Matt (July 18, 2014). "The Flash: Prison Break Star To Play Captain Cold". IGN. Archived from the original on July 20, 2014. Retrieved July 18, 2014.
- Ng, Philiana (September 15, 2014). "The CW's 'The Flash' Recruits Original Star for Flashy Reunion". The Hollywood Reporter. Archived from the original on September 16, 2014. Retrieved September 15, 2014.
- Ng, Philiana (September 3, 2014). "'The Flash' Stages 'Prison Break' Reunion (Exclusive)". The Hollywood Reporter. Archived from the original on September 5, 2014. Retrieved September 3, 2014.
- "Listing for Flash, The: (#108) 'Flash vs. Arrow'". The Futon Critic. Retrieved April 12, 2016.
- Damore, Meagan (May 7, 2015). "Hawkgirl, Other "Legends" Starts to Appear in "The Flash" Season Finale". Comic Book Resources. Archived from the original on May 9, 2015. Retrieved May 7, 2015.
- Andreeva, Nellie (March 30, 2015). "The Arrow/Flash Spinoff Casts Ciara Renée As Hawkgirl". Deadline Hollywood. Archived from the original on April 2, 2015. Retrieved April 2, 2015.
- Abrams, Natalie (July 18, 2014). "The Flash Casts Wentworth Miller, Plots Arrow Crossovers". TV Guide. Archived from the original on July 20, 2014. Retrieved July 18, 2014.
- Ng, Philiana (March 7, 2014). "The CW's 'Flash' Adds Police Captain". The Hollywood Reporter. Archived from the original on March 8, 2014. Retrieved March 7, 2014.
- Ng, Philiana (May 27, 2014). "'Flash': John Wesley Shipp's Secret Character Revealed". The Hollywood Reporter. Archived from the original on May 30, 2014. Retrieved May 28, 2014.
- Abrams, Natalie (May 24, 2016). "The Flash reveals man in the iron mask!". Entertainment Weekly. Archived from the original on May 27, 2016. Retrieved May 25, 2016.
- Burlingame, Russ (October 2, 2016). "The Flash's John Wesley Shipp: "Jay Is My Version of Barry, 25 Years Later"". Comicbook.com. Archived from the original on October 3, 2016. Retrieved October 4, 2016.
- Steve Surjik (director), Keto Shimizu & Ben Sokolowski (writers) (February 17, 2015). "Fallout". The Flash. Season 1. Episode 14. The CW.
- Ausiello, Michael (August 25, 2015). "The Flash Casts Newcomer as Heroine Speedster Jesse Quick". TVLine. Archived from the original on August 26, 2015. Retrieved August 25, 2015.
- Abrams, Natalie (February 23, 2016). "The Flash reveals Zoom's identity!". Entertainment Weekly. Archived from the original on February 27, 2016. Retrieved February 23, 2016.
- The Many Faces of Zoom featurette. Warner Bros. Home Entertainment.
- Burlingame, Russ. "Teddy Sears On What Makes The Flash Great, The Zoom Twist, and This Week's Big Episode". Comicbook.com. Archived from the original on September 8, 2016. Retrieved September 12, 2016.
- Prudom, Laura (August 31, 2015). "'The Flash' Casts Tony Todd as Voice of DC Villain Zoom in Season 2 (EXCLUSIVE)". Variety. Archived from the original on September 1, 2015. Retrieved August 31, 2015.
- "Versusd Zoom on New 'The Flash' Tonight". Entertainment Alley. Archived from the original on November 5, 2016. Retrieved September 12, 2016.
- "Did The Flash just reveal Zoom's identity?". Entertainment Weekly. January 26, 2016. Archived from the original on August 17, 2016. Retrieved September 9, 2016.
- "Is Hunter Zolomon Zoom On 'The Flash'? Jay Garrick's Earth-1 Doppelgänger Has A Meaningful Name". Bustle. February 2, 2016. Archived from the original on November 25, 2016. Retrieved November 25, 2016.
- Goldfarb, Andrew (July 11, 2015). "Comic Con 2015: The Flash Adds Jay Garrick, Wally West or Season 2". IGN. Archived from the original on July 15, 2015. Retrieved July 16, 2015.
- Prudom, Laura (September 29, 2015). "'The Flash' Casts 'Candyman' Star as Iris Mom". Variety. Retrieved September 29, 2015.
- "The Flash: Explaining This Week's Jay Garrick-Fueled Twists and Trivia". IGN. October 14, 2015. Archived from the original on October 16, 2015.
- "Supergirl Is the Common Thread in "Flash," "Arrow" & "Legends Of Tomorrow" Crossover". Comic Book Resources. Archived from the original on July 30, 2016. Retrieved July 29, 2016.
- Gonzalez, Umberto; Ge, Linda (December 14, 2016). "'The Flash' Casts 'Sleepy Hollow' Star Jessica Camacho to Play Gypsy (Exclusive)". The Wrap. Archived from the original on March 8, 2017.
- Damore, Meagan (October 31, 2017). "The Flash Reveals Gypsy's Given Name". Comic Book Resources. Archived from the original on November 1, 2017. Retrieved November 1, 2017.
- Mitovich, Matt Webb (March 20, 2017). "The Flash: House Alum Anne Dudek to Recur as Quirky Future Genius". TVLine. Archived from the original on March 20, 2017. Retrieved March 22, 2017.
- Ausiello, Michael (June 30, 2016). "The Flash: Harry Potter's Tom Felton Joins Season 3 as Series Regular". TVLine. Archived from the original on July 1, 2016. Retrieved July 1, 2016.
- "'The Flash' Season 3: Tom Felton's Character Gets A New Name! Episode 2 Title & Plot [VIDEO]". Enstarz.com. September 22, 2016. Archived from the original on September 27, 2016. Retrieved September 26, 2016.
- Damore, Meagan (November 22, 2016). "The Flash Reveals Doctor Alchemy's Secret Identity". Comic Book Resources. Archived from the original on November 23, 2016. Retrieved November 22, 2016.
- D'Alessandro, Anthony (July 23, 2016). "Doctor Alchemy Unveiled In 'The Flash' Season 3 Trailer- Comic-Con". Deadline Hollywood. Archived from the original on August 14, 2016. Retrieved August 9, 2016.
- Holbrook, Damian (April 24, 2018). "'The Flash' EP Todd Helbing on Ralph's Demise: 'You Gotta Stick with the Plan'". TV Insider. Retrieved May 25, 2018.
- Abrams, Natalie (August 21, 2017). "The Flash adds Katee Sackhoff as DC Comics villain". Entertainment Weekly. Archived from the original on August 21, 2017. Retrieved August 21, 2017.
- Romano, Nick (21 July 2018). "The Flash season 5 casts American Pie's Chris Klein as the next big bad". Entertainment Weekly. Retrieved 21 July 2018.
- Burlingame, Russ (November 13, 2014). "The Flash Casts Tomorrowland's Paul Anthony As Arrow Crossover Villain Ray Bivolo". Comicbook.com. Archived from the original on November 16, 2014. Retrieved November 20, 2014.
- Mitovich, Matt Webb (November 26, 2014). "Flash Scoop: The Voice of Gideon Is..." TVLine. Archived from the original on February 16, 2016.
- "Episode Title: (#119) "Who is Harrison Wells?"". The Futon Critic. Retrieved April 2, 2015.
- Garofalo, Alex (March 31, 2015). "The Flash Season 1 Spoilers: Eobard Thawne Backstory Revealed In Episode 17; What Happened In 'Tricksters'? [Recap]". International Business Times. Archived from the original on April 2, 2015. Retrieved April 1, 2015.
- Schedeen, Jesse (October 21, 2014). "The Flash: "Things You Can't Outrun" Review". IGN. Archived from the original on October 22, 2014. Retrieved October 21, 2014.
- Abrams, Natalie (April 4, 2016). "Arrow's Katie Cassidy to appear on The Flash, Vixen". Entertainment Weekly. Archived from the original on April 6, 2016. Retrieved April 4, 2016.
- Burlingame, Russ. "The Flash: Invincible Synopsis Brings in Earth-2 Laurel Lance and Seemingly Confirms Wally's Powers". ComicBook.com. Archived from the original on April 30, 2016. Retrieved April 29, 2016.
- Brown, Laurel (August 20, 2014). "Zap2it First: 'The Flash' casts 'Star-Crossed's' Greg Finley as Girder". Zap2It. Archived from the original on August 21, 2014. Retrieved August 20, 2014.
- Weinstein, Shelli (July 29, 2014). "'The Flash,' 'Arrow' Announce New Cast Members". Variety. Archived from the original on August 1, 2014. Retrieved July 29, 2014.
- Gelman, Vlada (December 16, 2014). "The Flash Casts Sleepy Hollow Alum Nicholas Gonzalez as Cisco's Brother". TV Line. Archived from the original on December 17, 2014. Retrieved December 17, 2014.
- Burlingame, Russ. "Rupture Comes to The Flash Bent on Revenge". Comicbook.com. Archived from the original on April 17, 2016. Retrieved April 15, 2016.
- Burlingame, Russ (January 14, 2015). "The Flash Exclusive: Devon Graye To Play Copycat Trickster In Mark Hamill's Return". Comicbook.com. Archived from the original on January 18, 2015. Retrieved January 15, 2015.
- Sepinwall, Alan (December 8, 2014). "Exclusive: Mark Hamill to play the Trickster again on 'The Flash'". Hitfix. Archived from the original on August 9, 2015.
- Damore, Meagan (November 30, 2016). "The Flash: Mark Hamill, John Wesley Shipp Return in New Photos". Comic Book Resources. Archived from the original on November 30, 2016. Retrieved November 30, 2016.
- "The Flash Photos – Fallout". The CW. Archived from the original on February 16, 2016. Retrieved October 7, 2015.
- Abrams, Natalie (December 2, 2014). "'The Flash' drops a big 'Arrow' bombshell". Entertainment Weekly. Archived from the original on December 19, 2015. Retrieved November 30, 2015.
- Gallaway, Lauren (December 2, 2015). ""Arrow" Recap: Epic "The Flash" Crossover Concludes With Time Travel and Teamwork". Comic Book Resources. Archived from the original on December 3, 2015. Retrieved December 3, 2015.
- Dornbush, Jonathan (March 22, 2015). "Doug Jones teases The Flash appearance". Entertainment Weekly. Archived from the original on March 24, 2015. Retrieved March 22, 2015.
- Goldman, Eric (February 18, 2015). "Arrow: Doug Jones To Play DC Comics Villain Deathbolt". IGN. Archived from the original on February 18, 2015. Retrieved February 18, 2015.
- Gelman, Vlada (February 9, 2015). "The Flash Enlists Walking Dead Alum Emily Kinney as Atom Foe/Anti-Felicity". TVLine. Archived from the original on February 11, 2015. Retrieved February 9, 2015.
- Swift, Andy (August 7, 2014). "Arrow's [Spoiler] Crosses Over to Flash". TVLine. Archived from the original on August 8, 2014. Retrieved August 8, 2014.
- "The Flash Casts Smash Alum to Play Gay DC Comics Villain Pied Piper". TVLine. October 9, 2014. Archived from the original on October 11, 2014. Retrieved October 9, 2014.
- Dornbush, Jonathan (March 29, 2016). "The Flash recap: 'Flash Back'". Entertainment Weekly. Archived from the original on April 2, 2016. Retrieved April 4, 2016.
- Cayetano, Byron (April 20, 2015). "The Flash' Episode 19 Spoilers: Hannibal Bates A.K.A. Everyman To Make His Debut; Gorilla Grodd To Be Dealt With In Season 1?". KPopStarz. Retrieved May 7, 2017.
- Couch, Aaron (February 3, 2015). "The Flash: Can Barry Dodge a Speeding Bullet? (Exclusive Video)". The Hollywood Reporter. Archived from the original on March 10, 2015. Retrieved April 20, 2015.
- Radish, Christina (November 25, 2014). "The Flash Michael Reventar Interview". Collider. Archived from the original on December 9, 2014. Retrieved November 25, 2014.
- Byrne, Craig (November 11, 2014). "Firestorm Warning: DC Comics Character Jason Rusch To Appear On The Flash (Exclusive)". KSite TV. Archived from the original on November 13, 2014. Retrieved November 16, 2014.
- Sunu, Steve (August 28, 2014). "'The Flash' Trailer: Chad Rook shows up as Weather Wizard". Comic Book Resources via HitFix. Archived from the original on September 12, 2014. Retrieved October 17, 2014.
- "'Arrow' Without Oliver? Producers Preview the Rise of Black Canary, Atom and Brick". Variety. January 21, 2015. Archived from the original on January 22, 2015. Retrieved January 21, 2015.
- "The Flash' Adds William Sadler as Simon Stagg". Movieweb. July 13, 2014. Archived from the original on July 15, 2014. Retrieved July 14, 2014.
- Tylwalk, Nick (October 15, 2014). "The Flash, Season 1, Episode 2 Synopsis – "Fastest Man Alive"". Bam! Smack! Pow!. Fansided. Archived from the original on October 22, 2014. Retrieved October 17, 2014.
- Burlingame, Russ (January 6, 2016). "Exclusive: Arrow's Diggle To Help The Flash Take On King Shark". Comicbook.com. Archived from the original on January 7, 2016. Retrieved January 7, 2016.
- Burlingame, Russ (August 25, 2015). "Exclusive: The Flash Casts Demore Barnes as Firestorm Villain Tokamak". Comicbook.com. Archived from the original on August 27, 2015. Retrieved August 25, 2015.
- Gallaway, Lauren (December 1, 2015). ""The Flash" Recap: The Epic "Arrow" Crossover Begins With Vandal Savage & Two Hawks". Comic Book Resources. Archived from the original on December 4, 2015. Retrieved December 1, 2015.
- Prudom, Laura (December 9, 2015). "'The Flash' Taps Comedian Tone Bell as Iris' New Boss". Variety. Archived from the original on December 10, 2015. Retrieved December 10, 2015.
- Burlingame, Russ (July 16, 2015). "Exclusive: WWE's Adam "Edge" Copeland Cast As Atom-Smasher On The Flash Season 2". Comicbook.com. Archived from the original on July 16, 2015. Retrieved July 16, 2015.
- Thomas, Jeremy (October 7, 2015). "The Flash 2.1 Review – 'The Man Who Saved Central City'". 411Mania. Archived from the original on February 19, 2016.
- Roots, Kimberly (August 4, 2015). "Legends of Tomorrow Casts Season 1 Big Bad Vandal Savage". TVLine. Archived from the original on August 6, 2015. Retrieved August 4, 2015.
- Abrams, Natalie (January 11, 2016). "The Flash casts Battlestar Galactica alum Aaron Douglas as The Turtle". Entertainment Weekly. Archived from the original on April 10, 2016.
- Fitzpatrick, Kevin (September 29, 2015). "New 'Flash' Trailer Drops a Major 'Legends of Tomorrow' Spoiler". Screen Crush. Archived from the original on September 30, 2015. Retrieved September 29, 2015.
- "(#204) "The Fury of Firestorm"". Futon Critic. Retrieved October 8, 2015.
- Burlingame, Russ; Jayson, Jay (December 2, 2015). "Exclusive: Marco Grazzini Cast As Tar Pit In The Flash". Comicbook.com. Archived from the original on December 4, 2015. Retrieved December 2, 2015.
- Hayter, David (October 28, 2015). "Okay, I can now officially confirm that I am the voice of #KingShark on #TheFlash. #AvoidTheWaterBarry". Twitter. Archived from the original on March 5, 2016. Retrieved November 3, 2015.
- Petski, Denise (August 3, 2015). "Falk Hentschel To Play Hawkman In 'Legends Of Tomorrow'". Deadline Hollywood. Archived from the original on April 30, 2017.
- Couch, Aaron (July 15, 2015). "'The Flash' Casts Michael Ironside as Captain Cold's Father (Exclusive)". The Hollywood Reporter. Archived from the original on July 15, 2015. Retrieved July 16, 2015.
- Burlingame, Russ (October 13, 2015). "Exclusive: Damien Darhk To Be On The Flash & Legends Of Tomorrow". Comicbook.com. Archived from the original on October 13, 2015.
- Mitovich, Matt Webb (January 26, 2016). "'The Flash' Season 2 Casts Female Speedster Trajectory — Allison Paige". TVLine. Archived from the original on January 29, 2016. Retrieved January 31, 2016.
- Mitovich, Matt Webb (December 15, 2015). "Matt's Inside Line: Scoop on The 100, The Flash, NCIS, Castle, The Strain, Galavant, Supergirl, POI and More". TVLine. Archived from the original on March 16, 2016.
- Burlingame, Russ (December 16, 2015). "Exclusive: Geomancer Coming To The Flash". ComicBook.com. Archived from the original on December 18, 2015. Retrieved December 16, 2015.
- "(#219) "Back to Normal"". The Futon Critic. Retrieved April 8, 2016.
- Ching, Albert (October 2, 2015). ""The Flash of Two Worlds": 9 New Images from "The Flash" Season 2, Episode 2". Comic Book Resources. Archived from the original on October 4, 2015. Retrieved October 3, 2015.
- Trumbore, Dave (October 13, 2015). "'The Flash' Recap: "Flash of Two Worlds"". Collider. Retrieved August 1, 2017.
- Von Doviak, Scott (January 31, 2017). "The Flash brings a light touch to matters of life and death". The A.V. Club. Archived from the original on February 1, 2017. Retrieved February 1, 2017.
- Peters, Megan. "DC's Legends Of Tomorrow Casts Christina Brucato In Recurring Role". ComicBook.com. ComicBook.com. Archived from the original on December 1, 2016. Retrieved December 2, 2016.
- Ausiello, Michael (January 23, 2017). "Flash/Supergirl Musical Episode Stages Glee Reunion, Casts Darren Criss as the Menacing Music Meister". TV Line. Archived from the original on January 24, 2017. Retrieved January 24, 2017.
- Ching, Alfred (August 10, 2016). "Exclusive: "The Flash" Casts Its Mirror Master". Comic Book Resources. Archived from the original on August 11, 2016. Retrieved August 11, 2016.
- Beedle, Tim (March 6, 2017). "Exclusive: Abra Kadabra is Coming to The Flash". DC Comics. Archived from the original on March 7, 2017. Retrieved March 6, 2017.
- Abrams, Natalie (January 8, 2017). "The Flash set for two-part Gorilla Grodd episode". Entertainment Weekly. Archived from the original on January 9, 2017. Retrieved January 8, 2017.
- Saclao, Christian (October 6, 2016). "'The Flash' Star Alex Désert On Playing Captain Julio Mendez In Season 3 Premiere, 'Flashpoint'". International Business Times. Archived from the original on October 7, 2016. Retrieved October 9, 2016.
- Prudom, Laura (November 17, 2016). "'The Flash' casts Greg Grunberg in a badass Season 3 role". Mashable. Archived from the original on November 18, 2016. Retrieved November 17, 2016.
- Schwartz, Terri (January 20, 2017). "The Flash / Supergirl Crossover Episode Details Revealed". IGN. Archived from the original on January 20, 2017. Retrieved January 20, 2017.
- Burlingame, Russ (August 19, 2016). "Fargo's Joey King Comes to The Flash as Magenta". Comicbook.com. Archived from the original on August 21, 2016. Retrieved August 19, 2016.
- Mitovich, Matt Webb (August 23, 2016). "'Flash' Season 3 Casts Todd Lasance as The Rival, Promo Teases Savitar". TVLine. Archived from the original on August 24, 2016. Retrieved August 24, 2016.
- Jensen, Jeff (November 9, 2016). "This Week's Cover: CW superheroes crossover revealed". Entertainment Weekly. Archived from the original on November 10, 2016. Retrieved November 10, 2016.
- Staley, Brandon (February 24, 2017). "The Flash Revewals Another DC Hero's TV Debut With New Photo". Comic Book Resources. Archived from the original on February 25, 2017. Retrieved February 24, 2017.
- Bentley, Jean (August 18, 2016). "The Flash's Newest Villain, The Top, Will Make Your Head Spin". E!. Archived from the original on August 19, 2016. Retrieved August 18, 2016.
- Abrams, Natalie (August 8, 2016). "The Flash casts Vampire Diaries alum as Caitlin Snow's mom — exclusive". Entertainment Weekly. Archived from the original on August 9, 2016. Retrieved August 9, 2016.
- Wickline, Dan (November 8, 2017). "The Flash Season 4, Episode 5 Recap: Girls Night Out". Bleeding Cool. Archived from the original on November 18, 2017. Retrieved November 9, 2017.
- Bryant, Jacob (August 9, 2017). "'The Flash' Casts Sugar Lyn Beard as Hazard (Exclusive)". Variety. Archived from the original on August 10, 2017. Retrieved August 9, 2017.
- Melrose, Kevin (January 23, 2018). "The Flash Brings Back Another Actor (and Character) From 1990 Series". Comic Book Resources. Retrieved January 24, 2018.
- Arvedon, Jon (September 29, 2017). "The Flash: A New Tech-Controlling Villain Terrorizes Central City". Comic Book Resources. Archived from the original on September 30, 2017. Retrieved September 30, 2017.
- Anderson, Jenna (November 14, 2017). "'The Flash': Who Is The Black Bison?". Comicbook.com. Archived from the original on November 18, 2017. Retrieved November 15, 2017.
- "Spoiler Room: Scoop on 'Supergirl,' 'Arrow,' 'The Good Place,' and More". Entertainment Weekly. September 7, 2017. Retrieved September 29, 2017.
When I pressed EP Andrew Kreisberg on whether more of the Supergirl characters would get to take part in the upcoming four-way crossover event, he dropped quite a tease. "Kara and Alex are at the center of it through all four hours," Kreisberg says.
- Wickline, Dan (November 4, 2017). "Flash Season 4: Katee Sackhoff Is Most Definitely Not Playing Starbuck". Bleeding Cool. Archived from the original on November 18, 2017. Retrieved November 18, 2017.
- Wickline, Dan (November 18, 2017). "CW Releases 92 Images From Arrowverse Crossover: Crisis On Earth-X". Bleeding Cool. Archived from the original on November 18, 2017. Retrieved November 18, 2017.