James Kolk

Jackford "Evil Jack" Kolk is a version of Jackford B. Kolk who was a Starfleet Lieutenant and Chief Engineer on Deep Space 17 in an alternate universe until he was arrested for insubordination, and perhaps even treason, by his commanding officer, Station Commander Danny Wilde of the alternate universe. Before any further action could be taken against him, he escaped and accidentally crossed over into our universe.