Codename: Kids Next Door

Codename: Kids Next Door (also known as simply Kids Next Door or by its abbreviation KND) is an American animated television series created by Mr. Warburton for Cartoon Network, and the thirteenth of the network's Cartoon Cartoons. The series follows the adventures of a group of five 10-year-old children who operate from a high-tech tree house, fighting against adult and teen villains with advanced 2×4 technology. Using their codenames (Numbuhs 1, 2, 3, 4, and 5), they are Sector V, part of a global organization called the Kids Next Door.[2]

Codename: Kids Next Door
Created byMr. Warburton
Written by
Directed byMr. Warburton
Robert Alvarez (timing)
Voices of
Composer(s)Stephen Rucker
Thomas Chase Jones
Country of originUnited States
Original language(s)English
No. of seasons6
No. of episodes78 (regular)
3 (specials)
81 (total) (list of episodes)
Executive producer(s)
  • Mr. Warburton
  • Steve Oakes
  • David Starr
  • Richard Winkler
  • Jonathan Paley
Producer(s)Bruce Knapp
Running time22 minutes
Production company(s)
DistributorWarner Bros. Television Distribution
Original networkCartoon Network
Picture format(SDTV) 480i
First shown inJuly 20, 2001 (2001-07-20)
Original releaseDecember 6, 2002 (2002-12-06) –
January 21, 2008 (2008-01-21)
External links
Production website

The series came about as the result of a viewer's poll by Cartoon Network.[3] It ran from 2002 to 2008, with six seasons and 78 episodes. Two TV movies were broadcast: Operation: Z.E.R.O.[4][5], which aired in 2006, and Operation: I.N.T.E.R.V.I.E.W.S., which aired as the series finale in 2008.[6] A special half-hour crossover episode with fellow Cartoon Network series, The Grim Adventures of Billy & Mandy, aired in 2007.

Two video games, Operation S.O.D.A. and Operation V.I.D.E.O.G.A.M.E., were released based on the series. A handful of other Cartoon Network-branded games featuring the characters were also released. The series has also seen releases on DVD, both as part of Codename: Kids Next Door and as additions to other Cartoon Network compilation DVDs.


From left to right: Numbuh 2, Numbuh 4, Numbuh 3, Numbuh 1, and Numbuh 5


The show revolves around a group of five 10-year old kids, using codenames Numbers 1 through 5, who are the main home operatives of what is known as Sector V, that is part of a worldwide espionage-style organization called the Kids Next Door. Their mission is to fight crimes against kids (such as homework and flossing), many of which are willingly committed by "evil" adults, senior citizens, teenagers, and other children. Numbuh 1 is the bald, astute, no-nonsense, super skilled British-American boy Nigel Uno, leader of Sector V. Numbuh 2 is the overweight, comedic, intellectual, aviation enthusiastic, nerdy German-American boy Hoagie Gilligan Jr. Numbuh 3 is the quirky, happy-go-lucky Japanese-American girl Kuki Sanban. Numbuh 4 is the short-tempered, often irrational, fighting-prone Australian-American boy Wallabee Beatles. Numbuh 5 is the intelligent, laid-back, tomboyish African-American girl Abigail Lincoln.

Following a period of training, every member of the Kids Next Door chooses a number or alphanumeric code (deliberately pronounced and spelled as "numbuh") and is sent to a "sector" that acts as their home base. The sector headquarters, like some of the organization's bases and facilities, are tree houses, with both tree house and the tree it's in being of ludicrous proportions, and often suited to their environment. This includes a base constructed beneath the Arctic ice shelf, and a base built into a large pine tree. The main headquarters of the Kids Next Door is a tree house Moon Base. Kids follow their oath of protecting other kids as well as battling adulthood until the age of 13, when they are "decommissioned", a process of wiping their memories of any past KND activity and warping their minds. Such a practice has inevitably led to the creation of many KND villains who escaped decommissioning (notably Cree, formerly known as Numbuh 11 and Numbuh 5's older sister, and Chad, formerly known as Numbuh 274 and supreme commander of the Kids Next Door).

The practice of strict decommissioning at age 13 was later on revealed to be subject to exceptions: kids who have proved to be exceptional agents are offered the chance to carry on in KND as spies infiltrating the teen organization.[7] Decommissioning has also proved reversible due to a "re-commissioning" module used four times in the series (once in Operation: E.N.D. and three times in Operation: Z.E.R.O.).[8][9]

KND agents utilize a vast array of mechanical, electronic gadgets, weapons and machinery, collectively referred to as 2x4 (two-by-four) technology. The KND's 2x4 technology was originally conceived as being constructed from an assortment of objects, mostly including those that are found in common households; a theme their technology continued to adhere to. However, as the series progressed, the kind of objects their technology was constructed from became bigger, consisting of things such as large vehicles and small buildings. Not only that, but the complexity of their technology, such as their defensive weaponry and means of transportation, advanced to such absurd levels as to be considered science fiction, despite all of it still being constructed from nothing but said assortment of objects. Some KND operatives also wear helmets, with some similar to kabuto or samurai helmets, an example being Supreme Leader Numbuh 362's helmet.


The episodes are titularly presented as the missions of the members of Sector V in the Kids Next Door, denoted as "Operation:" followed by an acronym that can give viewers clues as to what each mission is about. Most episodes are divided into two parts, each a different mission, while some episodes consist of two directly linked parts with one mission. Usually the episodes have very little continuity with each other, although occasionally an episode will have a reference to at least one earlier episode and/or lead to consequences in later ones. Season Five's "Operation: O.U.T.B.R.E.A.K." is a direct continuation of another episode ("Operation: V.I.R.U.S."), and Season Six's "Operation: S.C.I.E.N.C.E." leads into "Operation: A.M.I.S.H." while another pair of Season Six episodes; "Operation: R.E.C.E.S.S." and "Operation: H.A.M.S.T.E.R.", occur simultaneously, the latter showing what sort of thing transpires while the team is away.

Stories in the earlier episodes were often about typical childhood problems, but magnified and exaggerated. As the series progressed, a more complex and continuous storyline developed. The final season revolved around a mysterious splinter cell within the KND itself observing Numbuh One for an unknown assignment, which was concluded in the series finale Operation: I.N.T.E.R.V.I.E.W.S.

The show frequently contains references to many films and other television series, especially in the later seasons, such as Star Wars, Ghostbusters, Planet of the Apes, Jaws, Jurassic Park, The Lord of the Rings, Godzilla, The Terminator, Spider-Man, Dragon Ball Z, James Bond, Star Trek, Transformers, Harry Potter, Rambo, Alien, The Matrix, X-Men, Predator, RoboCop, Men in Black, Doctor Who, Indiana Jones, and Mission Impossible; with James Bond, Star Trek, and Star Wars being the most prominently referenced in the series.


Warburton created a pilot episode, titled "Diseasy Does It", for another planned show, Kenny and the Chimp, which was to be produced by Hanna-Barbera. Among the planned recurring characters for Kenny and the Chimp was a group of rebellious children known as "Those Kids Next Door", who carried out their mischief from a house next to Kenny's home, and frequently caused trouble for him. The plot-line was then changed to focus on the group of kids alone, and later, the kids battling adulthood.[10] In 2001, the show's pilot episode, "No P in the OOL", which was produced at Cartoon Network Studios, won a Cartoon Network viewer's poll, and as a result, Codename: Kids Next Door was greenlit to become a series, while Kenny and the Chimp was not greenlit by the channel.[11] The character Professor XXXL, that appeared in "Diseasy Does It", became a recurring character in Codename: Kids Next Door after Kenny and the Chimp was not picked up for a series. Despite this, Kenny and Chimpy did make a cameo in "No P In The OOL".

The show was originally supposed to be titled the Kids Next Door, but "Codename" was added, when the crew discovered that a rival network, mainly the Fox Family Channel, developed a TV show titled Pigs Next Door.[citation needed] Codename: Kids Next Door was the most popular TV series produced at Curious Pictures, who previously did the work on Sheep in the Big City at Cartoon Network.


Main charactersEdit

  • Numbuh 1 / Nigel Uno (voiced by Benjamin Diskin)
  • Numbuh 2 / Hogarth Pennywhistle "Hoagie" Gilligan, Jr. (voiced by Benjamin Diskin)
  • Numbuh 3 / Kuki Sanban (voiced by Lauren Tom)
  • Numbuh 4 / Wallabee "Wally" Beatles / (voiced by Dee Bradley Baker)
  • Numbuh 5 / Abigail "Abby" Lincoln (voiced by Cree Summer)

Supporting charactersEdit

  • Numbuh 86 / Fanny Fulbright (voiced by Jennifer Hale)
  • Numbuh 362 / Rachel McKenzie (voiced by Rachael MacFarlane)
  • The Delightful Children from Down the Lane (voiced by Benjamin Diskin, Dee Bradley Baker, and Cree Summer)[a]
  • Father / Benedict Uno (voiced by Maurice LaMarche in Father mode and Jeff Bennett in Benedict mode)
  • Mr. Boss (voiced by Jeff Bennett)
  • Cree Lincoln (voiced by Cree Summer)
  • Numbuh 274 / Chad Dickson (voiced by Jason Harris)
  • Knightbrace (voiced by Tom Kenny)
  • Stickybeard (voiced by Mark Hamill)
  • The Toiletnator (voiced by Dee Bradley Baker)
  • Crazy Old Cat Lady (voiced by Grey DeLisle)
  • Grandma Stuffum (voiced by Grey DeLisle)
  • Mr. Wink and Mr. Fibb (voiced by Tom Kenny and Dee Bradley Baker)
  • Henrietta "Heinrich" Von Marzipan (voiced by Dee Bradley Baker while cursed and Candi Milo while uncursed)
  • Ice Cream Men (voiced by Tom Kenny, Dee Bradley Baker, Kevin Michael Richardson, and Daran Norris)
  • Senior Citizen Squad (voiced by Candi Milo, Tom Kenny, and Dee Bradley Baker)
  • Numbuh 0 /Montgomery "Monty" Uno (voiced by Frank Welker in adult mode and Dave Wittenberg in Numbuh 0 mode)
  • Elizabeth "Lizzie" Devine (voiced by Grey DeLisle)
  • Numbuh T/ Thomas "Tommy" Gilligan (voiced by Dee Bradley Baker)
  • Mushi Sanban (voiced by Tara Strong)
  • Numbuh 6 / Bradley the Skunk (animal sound effects by Dee Bradley Baker)
  • Numbuh 9 / Maurice (Voiced by Khary Payton)
  • Numbuh 83 / Sonya (Voiced by Janice Kawaye)
  • Numbuh 84 / Lee (Voiced By Janice Kawaye)
  • Count Spankulot (Voiced by Daran Norris)
  • Geneki Sanban (Voiced By Lauren Tom)
  • Kani Sanban (Voiced By Keone Young)
  • Numbuh $1.50 An Hour (Voiced By Rob Paulsen)


SeasonSegmentsEpisodesOriginally aired
First airedLast aired
PilotsN/A2November 6, 1998 (1998-11-06)July 20, 2001 (2001-07-20)
12613December 6, 2002 (2002-12-06)March 7, 2003 (2003-03-07)
22513October 3, 2003 (2003-10-03)June 4, 2004 (2004-06-04)
32313June 11, 2004 (2004-06-11)November 12, 2004 (2004-11-12)
42213November 19, 2004 (2004-11-19)July 22, 2005 (2005-07-22)
513September 30, 2005 (2005-09-30)August 25, 2006 (2006-08-25)
62113August 2, 2006 (2006-08-02)November 23, 2007 (2007-11-23)
SpecialsN/A3August 11, 2006 (2006-08-11)January 21, 2008 (2008-01-21)

There are six seasons, each with 13 episodes (two half-length episodes counting as one), adding up to 78 episodes altogether. There have been two TV movies, the first taking place between the second and third episodes of season 6 (Operation: Z.E.R.O.),[12][13] and the second at the end of season 6 (Operation: I.N.T.E.R.V.I.E.W.S.), which served as the series finale.


Awards and nominationsEdit

In 2005, the series won the Best Television Series for Children Award at the Ottawa International Animation Festival for "Operation: A.R.C.H.I.V.E.", which was written by Mr. Warburton and Mo Willems and storyboarded by Guy Moore and Quack Leard.[14]

The following year, "Operation: L.I.C.O.R.I.C.E." won the Festival's Collideascope Award for Television Animation for Children.[citation needed]


Other mediaEdit

Home mediaEdit

Two DVDs in two volumes were released of the series, totaling sixteen episodes by Warner Home Video. The entire series is available on digital purchase in six seasons. On May 30, 2019, the entire series, with the exception of the "Operation: Z.E.R.O." TV movie, was added to the Boomerang streaming service and its VRV channel.

Title Season(s) Episode count Release dates Episodes
Sooper Hugest Missions: File One 1, 2 9 October 26, 2004 (Region 1)[16]
May 15, 2006 (Region 2)[17]
February 13, 2008 (Region 4)[18]
Contains "Operation: I.-S.C.R.E.A.M.", "Operation: P.I.R.A.T.E.", "Operation: L.I.C.E.", "Operation: L.I.Z.Z.I.E.", "Operation: T.H.E.-F.L.Y.", "Operation: G.R.O.W.-U.P.", "Operation: C.A.T.S.", "Operation: S.P.A.N.K." and "Operation: S.U.P.P.O.R.T.". Extras: Six 2x4 TECH S.P.E.C.S., exclusive KND Game Boy Advance Cheats, and bonus episode of Foster's Home for Imaginary Friends: "House of Bloo's".
Cartoon Network Halloween 2: Grossest Halloween Ever 3 1 August 9, 2005 (Region 1 only) Features "Operation: T.R.I.C.K.Y.".
Sooper Hugest Missions: File Two 1-3 7 August 23, 2005 (Region 1 only) Contained "Operation: C.A.N.N.O.N.", "Operation: C.A.M.P.", "Operation: C.H.A.D.", "Operation: D.A.T.E.", "Operation: S.H.A.V.E.", "Operation: T.R.I.P." and "Operation: T.R.A.I.N.I.N.G.". Extras: Bonus episode of The Grim Adventures of Billy & Mandy: "Crushed!" and hints and tips of Operation: V.I.D.E.O.G.A.M.E.
Cartoon Network: Christmas Rocks 1 1 October 4, 2005 (Region 1 only) Features "Operation: P.I.A.N.O.".
Cartoon Network Halloween 3: Sweet Sweet Fear 3 1 September 12, 2006 (Region 1 only) Features "Operation: J.E.W.E.L.S.".
Cartoon Network Christmas 3 5 1 October 3, 2006 (Region 1 only) Features "Operation: N.A.U.G.H.T.Y.".
4 Kid Favorites: The Hall of Fame Collection Vol. 2 1, 2 9 March 12, 2013 (Region 1 only) This four-disc release features Sooper Hugest Missions: File One.
4 Kid Favorites: The Hall of Fame Collection Vol. 3 June 23, 2015 (Region 1 only) This four-disc release features Sooper Hugest Missions: File One, instead of Sooper Hugest Missions: File Two.

In other series or worksEdit

On an episode of The Grim Adventures of Billy & Mandy entitled "Sickly Sweet", a scene depicts Grim watching Codename: Kids Next Door. Also, in Billy & Mandy's Big Boogey Adventure, Numbuh Three makes a cameo as Grim's replacement. Also, in the MAD episode "Taking Nemo / Once Upon a Toon", Numbuh One cameos as one of the cartoon characters who has forgotten his identity. The show was also referenced in the New Boyz song "Tough Kids."[19] In the 2004 film Sideways, the show is playing on Miles' mother's television set. Numbuh 5 made a cameo in the OK K.O.! Let's Be Heroes episode "Crossover Nexus".


Stories featuring the Kids Next Door have been featured in the comic series Cartoon Cartoons, Cartoon Network Block Party, and Cartoon Network Action Pack. The characters are also featured in the books 2x4 Technology Handbook and Sooper Secrets and Boomerang Bloopers, both by Alison Wilgus.

Trading cardsEdit

A trading card game based on the series was launched by Wizards of the Coast in July 2005.

Video gamesEdit

Two video games were released for the series: Operation: S.O.D.A. in 2004 for the Game Boy Advance and Operation: V.I.D.E.O.G.A.M.E. in 2005 for PlayStation 2, Xbox, and GameCube. Several browser games were also released on the Cartoon Network website. The MMORPG style game Operation: B.E.S.T. was playable for a brief time in 2005, but was shut down shortly thereafter.

In Cartoon Network Universe: FusionFall, Numbuhs One through Five, and villains Father, Toiletnator, and Stickybeard appear as non-playable characters. KNDefense armor and 2x4 Tech weapons are available for players, Sector V's treehouse can be explored, and KND S.C.A.M.P.E.R.s can be used for transport. In Cartoon Network: Punch Time Explosion, Father and Numbuh 1 are playable, Sector V Treehouse and the C.O.O.L.-B.U.S. are arenas, and Numbuh 2 and Stickybeard are assist characters. In the console versions, Toiletnator is a playable character, Numbuh 4 is an assist character, and KND Moonbase is an arena.

Possible revival and possible spin-offEdit

On January 31, 2008, during a Q&A session on LiveJournal, when Tom Warburton was asked if "Operation: I.N.T.E.R.V.I.E.W.S." was in fact the true finale of Codename: KND, Warburton said that it was not necessarily meant to be the finale, stating that a revival could be made in the future.[20]

Warburton had unsuccessfully pitched a Galactic: Kids Next Door spin-off several times to Cartoon Network executives,[21] and at one point he considered to make a TV movie as a pilot for the potential spin-off series.[20] Following having any response, Warburton eventually decided to create a pitch that would be distributed over the internet pseudonymously in order to try and get the series approved with help from fans. Warburton wrote the script and collaborated with others who had worked on the series to produce an animatic-style pitch.[22][23] On March 19, 2015, a video was posted on YouTube of what appears to be an animatic of a darker sequel series featuring Numbuh 1 and the Galactic KND, entitled Galactic: Kids Next Door.[24] On April 1, 2015, a fan-made petition was started on to make G:KND a real series, which was also signed by Warburton himself and by voice actor Dee Bradley Baker.[25] Rat Animation also showed interest in the project.[26] Warburton later noted that the executives at Cartoon Network had noticed the response but were not interested in a continuation to KND, though he remained confident to get the sequel approved in the future.[25]


  1. ^ In "Operation U.N.D.E.R.C.O.V.E.R.", the one with the football helmet (Lenny) briefly separates from the others, and is individually voiced by Dee Bradley Baker.


  1. ^ "Codename: Kids Next Door". Metacritic. Archived from the original on 2015-02-27. Retrieved 2014-09-16.
  2. ^ Erickson, Hal (2005). Television Cartoon Shows: An Illustrated Encyclopedia, 1949 Through 2003 (2nd ed.). McFarland & Co. pp. 207–208. ISBN 978-1476665993.
  3. ^ "'Total Immersion Cartoon' Events Take Control at Cartoon Network". Time Warner. February 21, 2001. Archived from the original on January 11, 2017. Retrieved 2016-09-22.
  4. ^ "Codename: Kids Next Door (a Titles & Air Dates Guide)". Archived from the original on October 22, 2014.
  5. ^ "Codename: Kids Next Door – Operation Z.E.R.O. – IMDb". Archived from the original on 2018-12-07. Retrieved 2018-07-21.
  6. ^ Baisley, Sarah (January 16, 2008). "Codename: Kids Next Door Embarks on Final Mission". Animation World Network. Retrieved February 24, 2017.
  7. ^ "Operation: M.A.U.R.I.C.E.". Codename: Kids Next Door. Season 4. Episode 11. 2005-07-08.
  8. ^ "Operation: E.N.D.". Codename: Kids Next Door. Season 2. Episode 13. 2004-06-04.
  9. ^ "Operation: Z.E.R.O.". Codename: Kids Next Door (TV Movie). Episode M1. 2006-08-11.
  10. ^ "Audio Interview: Tom Warburton". November 9, 2006. Archived from the original on June 3, 2016. Retrieved 2008-10-24.
  11. ^ Ball, Ryan (December 5, 2002). "Codename: Kids Next Door Goes Into Action". Archived from the original on October 10, 2012. Retrieved 2008-10-27.
  12. ^ "Kids Next Door Movie Debuts Friday". Animation Magazine. August 7, 2006. Archived from the original on January 29, 2012. Retrieved 2008-10-27.
  13. ^ Bynum, Aaron H. (August 8, 2006). "Begin Operation Z.E.R.O." Animation Insider. Archived from the original on March 26, 2009. Retrieved 2008-10-27.
  14. ^ "2005 Ottawa International Animation Festival Awards". Archived from the original on 2017-12-01. Retrieved 2016-09-22.
  15. ^ "Codename: Kids Next Door — TV Show, Episode Guide & Schedule". TWC Central. Archived from the original on 11 January 2017. Retrieved 29 December 2017.
  16. ^ Codename Kids Next Door — Sooper Hugest Missions File One (2002), ASIN B0002MFGAK
  17. ^ Codename — Kids Next Door: Sooper Hugest Missions — File 1 [DVD],, ASIN B000FFL1N0
  18. ^ "Codename: Kids Next Door: Sooper Hugest Missions File 1". Madman Entertainment. Archived from the original on 2013-06-01. Retrieved 2013-05-25.
  19. ^ "New Boyz – Tough Kids Lyrics". Archived from the original on 2016-03-04. Retrieved 2015-08-15.
  20. ^ a b "Sooper Secret KND Production Blog". Archived from the original on 9 March 2017. Retrieved 29 December 2017.
  21. ^ "THE G:KND EXPERIMENT (part 1)". June 2015. Archived from the original on 6 March 2018. Retrieved 29 December 2017.
  22. ^ Archived 2017-09-10 at the Wayback Machine, Tom Warburton, "The G:KND EXPERIMENT (part 3)". Warburton Labs ,Jun. 5, 2015.
  23. ^ Archived 2017-01-11 at the Wayback Machine, Tom Warburton "The G:KND EXPERIMENT (part 1)". Warburton Labs ,Jun. 1, 2015.
  24. ^ Numbuh Vine (31 March 2015). "Stop the g:KND". Archived from the original on 6 July 2018. Retrieved 29 December 2017 – via YouTube.
  25. ^ a b Archived 2017-01-11 at the Wayback Machine, Tom Warburton. "The G:KND EXPERIMENT (part 9)". Warburton Labs, Jun. 19, 2015.
  26. ^ Archived 2017-01-11 at the Wayback Machine, Tom Warburton. "G:KND-- ANIMATED!!!". Warburton Labs, Sep. 12, 2016.

External linksEdit