Darth Bane from Most Powerful Sith Lords of All Time

Darth Bane is a fictional character in the Star Wars franchise. He was created by George Lucas, within the Star Wars canon where he is first mentioned in the novelization of Star Wars: Episode I – The Phantom Menace, where Bane is an ancient Sith Lord who lived a thousand years before the films, and is known for being the originator of the "Rule of Two" that the Sith Lords follow, which establishes: "A master and an apprentice can be the only Sith in the galaxy at one time", which still remains as his backstory. Darth Bane's only on-screen appearance happens when he appears as a vision to Jedi master Yoda, in the last episode of the animated series Star Wars: The Clone Wars, he was voiced by Mark Hamill (who portrays Luke Skywalker in the films).