Star Wars expanded to other media the characters Luke Skywalker, Princess Leia, Han Solo, and the Wookiee Chewbacca—assisted by the Jedi Obi-Wan Kenobi and the droids C-3PO and R2-D2—to thwart the evil plans of Sith Lord Darth Vader and the Galactic Empire. The film was followed by multiple sequel and prequel films. Along the production of the films were an array of derivative "Star Wars" works (set in the same continuity as the films), including books, comic books, video games, and television series, which take place at the same time as, between, and after the events of the original trilogy (1977–1983) and prequel trilogy (1999–2005). All
Star Wars: Darth Bane: Rule of Two Star Wars: Darth Bane: Rule of Two Darth Bane: Rule of Two, the sequel to the novel "", is part of the "Star Wars" expanded universe. It was written by Drew Karpyshyn, and was released on December 26, 2007. The novel centers on the young Sith apprentice Darth Zannah, recently taken under the wing of the Sith Lord Darth Bane. The "Rule of Two" of the title refers to the rule that there be only two Sith in existence at one time: a Master and an Apprentice, a rule that Bane originates. Darth Bane, still on the planet Ruusan, finds