Mind flayers farm these larval intellect devourers for food and sentries. Steve got mind flayers and neogi, James got beholders and aboleths. "The Complete Psionics Handbook" (1991) presented ways on using mind flayers with psionic powers. The origins of these unique undead mind flayers are unclear. Octopin&colon; A six-tentacled, purple-skinned monstrosity with a single eye created by mind flayers. The outcast humans eventually mutated, deep underground, into the mind flayers. Illithidae are to mind flayers as less intelligent animals are to humans. Mind Flayers are one of the primary factions in the "Spelljammer" campaign setting.