Constantine Ethelred Gurney

Gurney was an ex-prisoner of Volag Nok. He took over the prison planet, after buying a hacking system from Ulysees Meregrass. He became the new governor and locked up the original, Governor Lok. He also had one of three data chips for the Infinite. When the Doctor and Martha Jones came to the prison, Lok was set free and Gurney fled to the surface. Baltazar, having followed the Doctor, attacked Gurney and killed him. Gurney's final act was to kill Caw, Baltazar's robotic steed. (DW: The Infinite Quest)