The Raker Twins were twins that at one time helped Exbob (formerly known as Bob) in a a heist. During the heist, the tunnel they and Bob were in collapse. Becoming trapped caused a strain between Bob and the twins, where the twins blamed him for their current predicament, and even insulting him. They started calling him Exbob due to their belief that Bob no longer had any of his intelligence. Eventually the threats became more serious and Bob had to kill them before they had the opportunity to kill him. Killing them left a deep impression on Bob. renaming himself as Exbob and becoming extremely agitated.
- The Chronicles of Riddick: Assault on Dark Athena (Extra Content: Exbob)