Overseer was a designation for a Sith teacher who educated numerous Sith Acolytes at the Sith Academy located on Korriban. This occurred during the Cold War period, a time of conflict between the Galactic Republic and the Sith Empire. Although frequently Sith Lords, Overseers didn't necessarily need to hold that specific rank; some were Sith of lesser stature who demonstrated an aptitude for teaching. Assistant Overseers aided them in their instructional duties. Certain Overseers, for instance Overseer Ardran, even accepted their own apprentices.