Fumihiko Takaba

Fumihiko Takaba is a character in the Jujutsu Kaisen series. He was one of many normal people turned into a sorcerer by Kenjaku in order to participate in the Culling Game.

Fumihiko is an exceptionally goofy individual whose jokes aren't funny, but he still lives to entertain above all else. He found himself failing as a comedian and was down on his luck. A co-worker encouraged him to keep going because there's always a demand for comedians who think they're funny. Takaba acts on those words and has a very energetic attitude. He's very outspoken and comedy-focused in everything he does.

Innate technique: Comedian
When Fumihiko thinks of something he's certain will be funny, it becomes reality. It's a technique with enough potential to oppose even Satoru Gojo, but Fumihiko is utterly clueless of his own power. Thus, very little is known about how the technique functions or goes about bringing his humorous thoughts into reality. Comedian also applies to people other than Fumihiko, as seen when he forces writing to appear on Kenjaku's face. If Fumihiko ever becomes doubtful in his abilities as a comedian, the technique will deactivate until he regains confidence, leaving him vulnerable.

(Source: Jujutsu Kaisen Wiki)