Jimmy Colborn was a soldier who worked for the Forge.
In 2015, he and Mark Brennon guarded Derleth while it was being transported by train. When the train crashed, Derleth's containment unit broke, allowing it to influence the emotions of Brennon and Colborn. Brennon became envious of Colborn and shot him.
Lysandra Aristedes and Sally Morgan later encountered his corpse while exploring the wreckage of the train. (AUDIO: Project: Nirvana)