There are plenty of powerful Sith throughout "Star Wars" lore, from the movies and TV shows to "Star Wars Legends" that have been de-canonized but still influence the mainline continuity occasionally.

Luke Skywalkerhas been one of Star Wars' most powerful Jedi for nearly 50 years, and these five Sith Lords in Star Warswould have had the best chance against him. Although the Jedi and the Sith are ...