Mind Flayers are aberrants who are native to both the Far Realm and the Underdark. Upon first emigrating from the Far Realm, the aberrants settled in the Underdark and formed a powerful empire known as Nihilath. In many respects, mind flayers are among the most dangerous of all aberrants. Their hunger for living brains makes them capable of outright killing their victims in a heartbeat, yet makes them intelligent enough to form cohesive plans while also biding their time. While a beholder typically has a tenuous grip on its insanity at best, mind flayers are fully sane, calculating, and just generally evil. Their abilities with the arcane and psionic arts also makes them masters of disguise, capable of being perceived as any humanoid. Finally, although mind flayers have tremendous egos, they are still willing to work together in order to achieve the greatest possible outcome, waiting until later to settle any scores they may have with each other.