Dooku

Count Dooku, also known as Darth Tyranus, was a human male Sith Lord, formerly a Jedi Master. He was turned to the Dark Side when he was a Jedi and began to serve the Sith Lord Darth Sidious. He was regarded as a strong Force user and was one of the best lightsaber duelists of his time. He was killed by Anakin Skywalker aboard his own ship.