Star Wars: 10 Most Powerful Dark Side Force Users
5. Darth Tyranus (Count Dooku)
Formerly Jedi Master Dooku, he was one of the Fallen Twenty - those Jedi whom left the Order. He could sense the corruption within the Republic, and the Jedi's refusal to take action led to him turning his back on the Order, and becoming consumed by the Dark Side.
Calm, collected, and intelligent, Dooku was rarely seen in a fit of rage. His classical lightsaber form allowed for efficient attacks, and his knowledge of the Dark Side allowed him to exploit his enemies with Force Lightning.
Dooku was the leader of the Separatist army, and orchestrated many of the attacks throughout the Clone Wars - going head-to-head with the forces of the Galactic Republic, and the Jedi Order. He trained Asajj Ventress, General Grievous, and Savage Oppress. Dooku was also the Count of Serenno, and he ruled over his home planet with an iron fist.
He was trained by Master Yoda, and defeated Obi-Wan Kenobi and Anakin Skywalker, whilst also facing down Yoda and coming out unscathed.
His years of Jedi training, followed by his Sith learning under Darth Sidious gave Dooku a sense of discipline and control, a sense that he used to his advantage over his enemies.