Illithid
fictional monster from Dungeons & Dragons
In the Dungeons & Dragons fantasy role-playing game, illithids (commonly known as mind flayers) are monstrous humanoid aberrations with psionic powers. In a typical Dungeons & Dragons campaign setting, they live in the moist caverns and cities of the enormous Underdark.
Illithids believe themselves to be the dominant species of the multiverse and use other intelligent creatures as thralls, slaves, and chattel. Illithids are well known for making thralls out of other intelligent creatures, as well as feasting on their brains.
Publication history
Mind flayers were created by Gary Gygax, who said that one of his inspirations for them was the cover painting of the Titus Crow book The Burrowers Beneath by Brian Lumley. Tim Kirk's cover art on the book, then in its first printing, depicted only the tentacles of the titular burrowers, the Chthonians.
Dungeons & Dragons (1974–1976)
Mind flayers first appeared in the official newsletter of TSR, The Strategic Review #1, Spring 1975, in the section named "Creature Features". Here, the mind flayer is described as "a super-intelligent, man-shaped creature with four tentacles by its mouth which it uses to strike its prey." When it hits prey with a tentacle, the tentacle penetrates to the brain and draws it forth, allowing the monster to devour it. A mind flayer's major weapon is given as the Mind Blast, a 5-foot radius wave of "Psi force" which affects each opponent differently based on how intelligent it is; possible effects include permanent insanity, rage, confusion, coma, and death. The first illustration depicting mind flayers was by artist Tracy Lesch, who envisioned them "like a Ming the Merciless with the mental powers of a Professor X", which appeared in the Blackmoor (1975) supplement.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Sep 11, 2026. The linked authority identifier is Q986360. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1974, 1976 and 1975.
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This entry incorporates text from “Illithid” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.