Joker is a villain from the Batman franchise. The character is often depicted in various movies, television shows, and comics as a nihilistic, destructive, and violent figure. He is used as a meme character in hateful contexts to express discontent with the world, sometimes to celebrate or encourage acts of political violence. There are numerous meme formats that include the Joker character, not all of which are inherently hateful. Context and conveyed message need to be carefully considered when evaluating such memes.

An example of the Joker being used as a hateful meme character was when it was coopted by Gamers Rise Up, a movement that started as a satire of Gamergate that relied on using alt-right tropes and aesthetics, and which openly spread hate speech.