The Grim Adventures of Billy and Mandy (2001)

S1E19 Billy & the Bully

Billy faces relentless teasing from a bully called Sperg, prompting him to seek assistance from Grim. Desperate for a solution, Billy hopes that Grim can help him confront Sperg and put an end to the torment. With Grim’s guidance, Billy learns how to stand up for himself, leading to a showdown that could change his relationship with Sperg forever. Will Billy find the courage he needs, or will the bullying continue?