The Mind Flayer, also known as an Illithid, is a creature of terrible mental powers. Gifted with the ability to control the minds of others, they are highly intelligent and thoroughly evil. Mind Flayers live in subterranean cities much like the dark elves. Their mental powers are usually of such great power that they can dominate entire villages under their control. There is no sure way to kill an Illithid, unless a well devised plan is executed properly.
"You know the thing that makes gods fight against each other or marry one another? Or when something changes the minds of men to do wonderful or horrific things and no one really understands why? Whatever it is that makes those things happen... If there is a god that does that, I aspire to be that god."