Louis Székely (born September 12, 1967), known professionally as Louis C.K., is an American comedian, actor, writer, producer, director, and editor. He is the creator, star, writer, director, executive producer, and primary editor of the acclaimed FX comedy-drama series Louie. He is considered one of the greatest stand up comedians of all time. C.K. is known for his use of observational, self-deprecating, dark and vulgar humor in his stand-up career.