Monkey

Monkey is the Hormone Monster assigned to Andrew Glouberman, a raspy-voiced creature who shows up the moment puberty hits and never lets up. He wants chaos, arousal, and mischief, urging Andrew toward every bad impulse with gleeful encouragement, treating hormonal misery as the funniest show in town.

Nick Kroll plays him with unhinged, sweaty enthusiasm, somehow making a walking id lovable instead of just gross. He's the show's engine for embarrassment comedy, but the writing lets him occasionally show real, if twisted, affection for the kid he's tormenting, which keeps him from being a one-note gag.