Darth Bane: Rule of Two, the sequel to a novel, is part of the "Star Wars" expanded universe, the novel centers on the young apprentice Darth Zannah, is a member of which major antagonists in the space opera setting of "Star Wars", and are depicted as an ancient monastic and academic kraterocratic organization of preternaturally-gifted warriors driven by an agenda of galactic domination and revenge against their forebears, the selfless, knightly Jedi?