Grim (voiced by Greg Eagles) is a major character in The Grim Adventures of Billy and Mandy. He is the infamous Grim Reaper who is (unfortunately for him) friends with Billy and Mandy. He became their best friend forever after losing in a game of limbo.
- Grim is a guitarist of Twilight and her friends' band, the Rainbooms.
- Grim is a father figure to Twilight Sparkle (EG).