Mind Flayers

Verified Timeline

Lore & Background

Mind flayers were created by Gary Gygax, who said one of his inspirations was the cover painting of the Titus Crow book The Burrowers Beneath by Brian Lumley. Tim Kirk's cover art depicted only the tentacles of the titular burrowers, the Chthonians. The mind flayer first appeared in The Strategic Review #1, Winter/Spring 1975 (Vol. 1, No. 1), 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. The first illustration was by artist Tracy Lesch, who envisioned them 'like a Ming the Merciless with the mental powers of a Professor X', appearing in the Eldritch Wizardry (1976) supplement. Game statistics were also included in the Eldritch Wizardry supplement. The mind flayer appears in the first edition Monster Manual (1977). Roger E. Moore authored 'The Ecology of the Mind Flayer' in Dragon #78 (October 1983). The book The Illithiad (April 1998) greatly developed the mind flayer, introducing the illithid elder brain and the illithid-roper crossbreed, the urophion. The Illithiad sourcebook itself introduced an origin story for the illithids. In 5th Edition, designer Chris Perkins stated in a 2019 interview: 'If something has been consistently true about a monster throughout the game's history, it's a good bet that it holds true in Fifth Edition. Everything that we know is true about mind flayers in Fifth Edition can be found in the 5E Monster Manual and the "Mind Flayers: Scourge of Worlds" section of Volo's Guide to Monsters.'

In Their Own Story

The cavern air smelled of ozone and decay. A single candle flickered in the darkness, illuminating the pale skin of a captive human bound to a stone slab. The creature approached without sound, its tentacles writhing like snakes against the damp rock floor. It did not speak; it simply reached out with a mind that felt cold and vast as a frozen ocean. As the first tentacle touched the prisoner's temple, the candle flame turned blue, and silence swallowed the scream before it could leave the throat.

Reader's Guide

Illithids are hermaphroditic creatures who each spawn a mass of larvae two or three times in their life. The larvae resemble miniature illithid heads or four-tentacled tadpoles. Larvae are left to develop in the pool of the Elder Brain. The ones that survive after 10 years are inserted into the brain of a sapient creature. Hosts generally are humanoid creatures between 5 feet 4 inches and 6 feet 2 inches. The most desirable races for hosts are humans, drow, elves, githzerai, githyanki, grimlocks, gnolls, goblinoids, and orcs. Upon being implanted, the larva grows and consumes the host's brain, absorbing the host's physical form entirely and becoming a physically mature illithid. This process is called ceremorphosis. One of their most feared powers is the Mind Blast, where the illithid emits a cone-shaped psionic shock wave with its mind to incapacitate any creature for a short amount of time. Variants include the alhoon (also called illithilich), which are illithids that focus on arcane abilities and become undead liches; alhoons are pariahs in illithid society and are mercilessly hunted down. The ulitharid is a stronger mind flayer that can become an elder brain. Vampiric illithids are undead mind flayers that need both fresh blood and fresh brains to survive; one possible origin is given in the Ravenloft adventure Thoughts of Darkness, where 'vampiric mind flayers are either the result of a Mind Flayer tadpole infecting a vampiric host or a host that becomes a vampire before the tadpole fully converts them'.

Did You Know?

• Mind flayers were created by Gary Gygax, who cited the cover painting of Brian Lumley's The Burrowers Beneath as an inspiration.
• The first mind flayer illustration, by Tracy Lesch, depicted them 'like a Ming the Merciless with the mental powers of a Professor X' in Eldritch Wizardry (1976).
• The alhoon, or illithilich, first appeared in The Illithiad (1998).
• Mind flayers have been central villains in earlier adventures such as The Night Below (1995), The Sunless Citadel (2000), and Dungeon of the Mad Mage (2018), making Phandelver and Below: The Shattered Obelisk (2023) not
• Vampiric mind flayers were created when Lyssa von Zarovich (a descendant of Strahd) attempted to create a creature powerful enough to overthrow her great uncle.