Jimbo was an inmate in Butcher Bay Correctional Facility Single Max area. Barber once asked to stash something for him, but Jimbo didn't want to do that. He warned Riddick not to cross Rust, since Riddick would go under with him. Jimbo saw how Girish trained, and suggested him to use Staircruncher Doubleplus instead, but was shut down by Girish.
After Riddick had killed Rust. Jimbo then reminded him his warning, and told that now Abbott wants to kill Riddick.
- Jimbo is modeled after, Anders Backman, one of the game programmers.