The Grim Adventures of Billy and Mandy began as a Cartoon Network animated series in the early 2000s, following dim-witted Billy, cynical Mandy and Grim, the Grim Reaper, who becomes their unwilling friend after losing a limbo contest. Its mix of horror imagery and deadpan schoolyard humour made it a cult favourite, and clips from the show still circulate widely in memes, reaction videos and nostalgic compilations. The short format suits modern editing, where a recognisable cartoon moment can signal mischief, doom or sarcasm in seconds.