Jake - The Batman Season Five

A notorious bully at Gotham University, Jake was the roommate of David. Unbeknownst to the athlete and party boy, David was the leader of The Terrible Trio, a group of ostracized students who used mutagen patches to retaliate against their tormentors. 

Jake frequently exploited David's meek nature, hosting parties in their dorm room and locking David out. During one incident when David attempted to force his way in, he physically assaulted him, pushing him into a wall. This event marked Jake as the Trio's next target. 

Late one night in the gym, Fox ambushed Jake while he was swimming laps in the pool and applied a mutagen patch to his arm. This transformed Jake into a giant, enraged ape, which the GCPD would go on to dub "Gorilla Boy". 

Once the effects of the mutagen wore off, Jake was arrested by the police, who held him responsible for his destructive rampage through the university campus.