A Sith Lord was in service to the Sith Empire, and instructed the Beast-Lord named Brutann. In 3627 BBY, Darth Savik remembered that this particular Sith Lord had been a subordinate of Darth Jadus in an unstated capacity prior to Jadus's departure from a position of widespread influence in the galaxy.
This Sith also served as one of the intermediaries for Darth Jadus, who was his superior, within the Imperial Intelligence structure.