Creatures favourites by MistressWish on DeviantArt cthulhu like creature, purple, glowing eye, many tentacles, other worldly.

Contemplador (beholder), de Raven Mimura

Undead Lich Beholder Raven Mimura( this would probably be the worst thing ever besides an undead lich dragon)

A menagerie of deadly monsters for the worlds greatest roleplaying game The Monster Manual presents a horde of classic Dungeons Dragons creatures, including dragons, giants, mind flayers, and beholder

'Dungeons & Dragons' Movie In Tolkien-Like Universe Confirmed; Jack Black Part Of Cast?