Gelman

Gelman is a school bully from Disney's Recess and although sometimes shown to have a softer side he is a violent antagonist - being the principal villain of "Gus' Last Stand" in which he delivers a severe beatdown to Gus for standing up to him after days of torment.

Gelman was feared by the other children in the playground and was able to have free reign over it as a result, being bigger and meaner than anyone else meant he had no opposition: eventually after beating Gus Gelman lost his power over the playground as the other children outraged on him in order to stop the beatdown, forcing Gelman to run away as he was outnumbered.