An oblex devours memories not only to sustain its existence, but also to spawn new oblexes. Each time it fully drains the memories of a victim, it gains the creature’s personality—now twisted by the oblex’s foul nature. The more memories an oblex steals, the larger it becomes, until it must shed a personality it has absorbed or else become uncontrolled and erratic. This act spawns a new oblex.   Newly formed oblexes lack the capabilities of their older kin. They seek only to feed on memories and grow until they can impersonate their victims.   By experimenting on the slimes, jellies, and puddings that infest the depths of the Underdark, mind flayers created a special breed of Ooze, the oblex—a slime capable of assaulting the minds of other creatures. These pools of jelly are cunning hunters that feed on thoughts and memories. The sharper the mind, the better the meal, so oblexes hunt targets more likely to be intelligent, such as wizards and other spellcasters. When suitable fare comes within reach, an oblex draws its body up to engulf its victim. As it withdraws, it plunders the creature’s mind, leaving its prey befuddled and confused—or dead.   When oblexes feed on thoughts, they can form weird copies of their prey to use as lures, which helps them harvest even more victims for their mind flayer masters.