Wookieról: "Darth Revan was the first to realize the flawed logic of a Sith Lord training more than one apprentice at a time. Bane learned from Revan's holocron that, in times past, students of the dark side who were impatient and hungry for power would make alliances with his Master's other apprentices in order to defeat him and take the mantle of Master.(...) Although Revan's Sith Empire did indeed include a Sith academy and the training of multiple Warriors, Acolytes, and other practitioners, there were only two true Sith Lords—Darth Revan and Darth Malak. In that regard, Revan and Malak somewhat mirrored Exar Kun and Ulic Qel-Droma, although the latter two were more equals rather than master and apprentice; Kun also trained multiple apprentices simultaneously, as well.