Darth Bane is a fictional character in the Star Wars Expanded Universe. He is first mentioned in the novelization of Star Wars Episode I: The Phantom Menace, and is thereafter consistently referenced in Expanded Universe material. He is also officially part of the Star Wars canon, which Lucasfilm officially revised and solidified in 2014, because he appeared in the last episode of Star Wars: The Clone Wars. He is a major antagonist in the Jedi vs. Sith comic book series, and the protagonist of the novels Darth Bane: Path of Destruction, Darth Bane: Rule of Two and Darth Bane: Dynasty of Evil. Bane is notable for being the originator of the "Rule of Two" for the Sith Lords: a master and an apprentice can be the only Sith in the galaxy at one time.