Jorak Uln
this ancient Dark Jedi was stationed on Korriban many thousands of years before the Galactic Civil War, protecting the tomb of Tulak Hord. He was known as a sadistic individual who often drugged his captives in order to extract information from them. Uln was, at one time, the Master of the Sith academy on Korriban, but because of his nature, he was replaced with Uthar Wynn. It was said that Uln went insane after being replaced, although he remained a fixture at the academy. Years later, Uln was killed when a group of Jedi Knights infiltrated Korriban by posing as Sith apprentices, during their search for Darth Malak.