Evil Brain (Regular Show)

The Evil Brain is a brain-like organism formerly contained on the Space Tree Station.

Appearance
He has the appearance of a human brain, with a prehensile brain stem.

Biography
He was formerly an intergalactic criminal who caused a crime wave that almost destroyed an entire sector. Space Tree agent Keith captured him by challenging him to Chess, and locking him in a bird cage. Two Earth being, an anthropomorphic blue jay and raccoon named "Mordecai" and "Rigby" respectively, were tricked into letting him out when he fabricated a story of him being a "country brain" who Keith unfairly locked up. However, they soon realized he was evil and caught him. After that, they challenged him at Chess, which he knew for sure he would win at, being very intelligent. However his arrogance would be his undoing, as the boys threw him out of the airlock.