In demonology, Marbas or Barbas is a demon described in the Ars Goetia. He is described as the Great President of Hell governing thirty-six legions of demons. He answers truly on hidden or secret things, causes and heals diseases, gives wisdom and knowledge in mechanical arts, and can change men into other shapes. He is depicted as a great lion that, under the conjurer's request, changes shape into a man.
In popular cultureEdit
- Marbas is the name of a demon in The Priests.
- Bob Barbas is the name of a demon in DmC Devil May Cry.
- Barbas is the name of the dog which accompanies the daedric prince Clavicus Vile in The Elder Scrolls series.
- Barbas is the name of a demon on the TV show Charmed.
- Marbas is the name of the demon who placed a fake curse on William Herondale in Cassandra Clare's book Clockwork Prince.
- Barbas is the name of the god who possesses King Ashram in the Legend of Crystania anime.
- Marbas Black Knight Slayer is the Name of a Mobile Suit Gundam: Iron-Blooded Orphans Anime.
- Marbas Is The Name Of A Demon character in the manga The Tale of the Outcasts.
- Marbas is the name of a powerful hero in the famous mobile game AstroKings 
- S. L. MacGregor Mathers, A. Crowley, The Goetia: The Lesser Key of Solomon the King (1904). 1995 reprint: ISBN 0-87728-847-X.