During the time of the Cold War, a Sith Lord known as Tytonus sparked a rebellion aimed at overthrowing the Sith Emperor and the Dark Council. Following her proclamation of a personal kingdom located on Begeren, Tytonus faced exile from the Sith Empire, yet retained considerable influence via a large force of hired soldiers. The insurrection led by the Sith queen concluded circa 3643 BBY when she forged an alliance with Grathan, another Sith Lord who was also rebelling. Tytonus intended to support Grathan on Dromund Kaas by deploying her military forces onto the planet and advancing towards the Imperial capital, Kaas City. However, Lord Tytonus met her death at the hands of an Imperial special operations group during this offensive.