Fat Boy Jim is a character in Grand Theft Auto 2 who is a member in the Rednecks. Billy Bob Bean, leader of the Rednecks, has Claude Speed blow up a Pickup near his trailer, while Jim was bowling. During the explosion a redneck gang member is seen being killed inside the trailer. It is unknown if that was Jim since Bean doesn't mention anything about him after the explosion.
- His name is probably a parody of real-life DJ Fatboy Slim.