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Intellect devourers resembled walking brains on a set of bestial legs. They were servants of the mind flayers and took over their victims' minds on their behalf.[1]

Don't cry. We have no intention of eating your brain. In fact; your brain is going on a wonderful journey!
— Qorik El-Slurrk the mind flayer[1]


They were capable of consuming a creature's mind and memories, subsequently entering the body and using it as a new host. Normally, it then used the host's body to lure others into its illithid creators' hunting grounds. Once in control of its host, an intellect devourer could only be removed by a protection from evil and good spell. However, this process killed the host unless the original brain was restored within a few seconds. Alternatively, a wish spell could restore the host's brain while the creature still inhabited the host, forcing it out.[1]


Illithids bred intellect devourers by subjecting the brain of a creature (usually a thrall) to a ritual in which the brain started sprouting legs.[1] During this process, the newly created aberration passed through a larval form called ustilagor before reaching its final adult form.[7]


In the Abyss, they could be found in Shedaklah, the Slime Pits, 222nd layer of the Abyss.[8]


See Also[]


Waterdeep: Dragon HeistWaterdeep: Dungeon of the Mad Mage
Video Games
Neverwinter NightsBaldur's Gate III
Card Games
AD&D Trading Cards
Board Games
Faerûn Under SiegeDungeons & Dragons Dice Masters: Trouble in WaterdeepDungeons & Dragons Adventure Begins


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Mike Mearls, Jeremy Crawford, Christopher Perkins (2014-09-30). Monster Manual 5th edition. Edited by Scott Fitzgerald Gray. (Wizards of the Coast), p. 191. ISBN 978-0786965614.
  2. Mike Mearls, Greg Bilsland and Robert J. Schwalb (June 15, 2010). Monster Manual 3 4th edition. (Wizards of the Coast), p. 118. ISBN 0786954902.
  3. 3.0 3.1 3.2 Bruce R. Cordell (April 2004). Expanded Psionics Handbook. (Wizards of the Coast), pp. 202–203. ISBN 0-7869-3301-1.
  4. Steve Winter (1991). The Complete Psionics Handbook. (TSR, Inc.), p. 117. ISBN 1-56076-054-0.
  5. 5.0 5.1 Doug Stewart (June 1993). Monstrous Manual. (TSR, Inc), p. 207. ISBN 1-5607-6619-0.
  6. Gary Gygax (December 1977). Monster Manual, 1st edition. (TSR, Inc), p. 54. ISBN 0-935696-00-8.
  7. 7.0 7.1 Kevin Baase, Eric Jansing, Oliver Frank, and Bill Halliar (November 2005). “Monsters of the Mind – Minions of the Mindflayers”. In Erik Mona ed. Dragon #337 (Paizo Publishing), pp. 34–35.
  8. Wolfgang Baur and Lester Smith (1994-07-01). “The Book of Chaos”. In Michele Carter ed. Planes of Chaos (TSR, Inc), p. 22. ISBN 1560768746.