Billy (The Grim Adventures of Billy & Mandy)

Billy is one of the main characters from the Cartoon Network original series . The polar opposite of his friend Mandy, Billy is known for having a low IQ and causing the most trouble for Mandy and Grim as a result. He is often kind to Grim, although he is seen by Mandy as more of a servant than an actual friend. His biggest fears are clowns and insects and often uses tangelos to ward them off.

Billy's only appearance in a Christmas special was Billy & Mandy Save Christmas.