Grim Reaper is a main character in the cartoon series, The Grim Adventures of Billy & Mandy. After losing a limbo contest to Billy and Mandy, Grim is fated to be their "best friend" forever. Unfortunately for the Reaper, the contract legally binds him to them, such that if he ever breaks his friendship with them, he would be forced to spend eternity in Underworld Jail, as a result of violating his contract. Though Billy is friendly towards him, Mandy treats him dominantly, and this angers and irritates him to the point where he constantly fantasizes about killing both of them.

The Grim Reaper is a character in several fan fictions, having in different backgrounds of the character and so resulting in vastly different characters. Grim Reaper might refer to:

  • Grim Reaper (GTR): Grim, as he appears in the story, Grim Tales: Rebirth.
  • Grim Reaper (Ω Universe) : Grim, as he appears in the Ω Universe.