Sith Overlord

Sith Overlords were the leaders of the Sith species. They battled against each other regularly to achieve the superior title of Sith'ari. Such Overlords were Adas and Dathka Graush. The Massassi caste was one of the most usual to gain this title, although the Kissai caste sometimes battled with the dark side. They stayed in power over Korriban and Ziost from about 20,000 BBY to about 10,000 BBY.