10. Lord Vitiate

There are Sith Masters and there are Sith Lords, but there’s only one Lord Vitiate, who’s best known as the Sith Emperor. With his knowledge of the Force, Vitiate ruled for more than a thousand years, and proved that he was godlike in comparison with the other users of the Force.

Marka Ragnos took note of him while he was still a child who’d been named a Lord in his early teens, and Vitiate rose to power when the Jedi and the Republic defeated Naga Sadow. Under the guise of aiding the remaining Sith Lords, Vitiate lured them all onto a single planet. There, he used his colossal powers to enslave their minds, which was an unparalleled feat since there were more than 8000 Sith Lords present. He fed on their life force, and became immortal as the most powerful Sith of all time.

There’s truly no one more powerful in the whole of Star Wars history.