Colonel Hareth was a female Sith Pureblood who served in the Imperial Military of the reconstituted Sith Empire. The lover of Executor Krannus, a fellow Imperial officer, Hareth was also a member of Krannus' death cult that worshiped the Sith Emperor. During the renewed war between the Galactic Republic and the Empire, Hareth accompanied Krannus to the planet Belsavis so that the cult could destroy the world and thereby achieve the Emperor's goals, and she gladly sacrificed herself to stall the Jedi Knight known as the Hero of Tython so that Krannus could complete their mission.