Darth Aruk was a Dark Lord of the Sith and member of the reconstituted Sith Empire's Dark Council. Aruk was in charge of the Sphere of Sith Philosophy, and as such was responsible for upholding the Sith Code and spreading anti-Jedi teachings. He also attempted to weed out Revanite cultists who diluted the Sith with heresy concerning Darth Revan's balanced approach to the Force.