Mind Flayers. The very name conjures up images of slavers and overlords; of ravenous beings with an insatiable appetite for the brains of other creatures. Unveiled Masters: The Essential Guide to Mind Flayers describes in great detail the history, biology, society and culture of the mind flayers, the penultimate fantasy adversary. Bring new heights of challenge to any D20 campaign with these nefarious masterminds!Unveiled Masters features: details on the mind flayer interplanar empire that spans the multiverse; an exhaustive study into the psychology of heartless predators, insidious races specially designed to infiltrate the enemies of the mind flayers; variant mind flayers to further challenge your characters; mind flayer "technology", an assembly of cunningly-wrought psionic and magical devices that permit the mind flayers to domiante lesser species; a complete mind flayer pantheon; enough new Domains, Feats, Spells and Psionic powers to rule the multiverse; New prestige classes for mind flayers, and Adventure seeds and campaign hooks galore!