In the time of the prequel era, the
Sith only numbered two.
Darth Sidious and his favored apprentice worked secretly, behind the scenes, to bring the Republic to its knees. Four thousand years before that, it was a much different picture. The Sith had huge war fleets and many acolytes, apprentices, and adepts to challenge the Republic.
Against this sprawling backdrop was the award-winning hit LucasArts title, Star Wars Knights of the Old Republic. The sequel to KOTOR is underway, but in the meantime, some of the most dangerous threats of that game have just been added to the starwars.com databanks.