Darth Tyranus
this was the Sith title given to Count Dooku, after he became the apprentice of Darth Sidious. Very few beings knew of this relationship, although Jango Fett understood it. Dooku was surprised when he was approached by Sidious, who challenged Dooku to channel his feelings for the Old Republic and the Jedi Order into better uses. Rather than forcing Dooku into a lightsaber duel to the death, Sidious took Dooku under his wing and discussed their philosophies, ultimately coming to a point where they separate visions of the galaxy's future were melded into a single goal. Under the name of Darth Tyranus, the Count usurped the work of Jedi Master Sifo-Dyas, who had been a confidante of Dooku's at the Jedi Order. When Sifo-Dyas revealed that he had put the plans in place to create a clones army for the Old Republic, Dooku relayed the information to Darth Sidious. Sidious ordered Dooku to eliminated Sifo-Dyas and assume control of the clone project, as part of his final test of loyalty. After killing Sifo-Dyas, Tyranus recruited Jango Fett on the moons of Bogden, to serve as the genetic basis for their clone army. Working as Darth Tyranus some ten years before the Battle of Geonosis, Dooku made contact with the Kaminoan people. It was inferred that Dooku worked for Sifo-Dyas in arranging for the creation of the clone troopers who would later serve in the Army of the Republic, but this not the case. Darth Sidious, who was none other than Chancellor Palpatine, knew that Dooku and Sifo-Dyas had once been friends. It had been Sifo-Dyas' idea all along the build the clone army, hoping that it would aid the Jedi Order in turning back the growing tide of Dark Side influence. When Sidious learned of these plans, he realized that the clones could be used to his advantage. He then ordered Darth Tyranus to eliminate Sifo-Dyas - as proof of his loyalty to Darth Sidious - so that the Jedi Order and the Republic would not find out about the clones until Sidious was ready for them to know. Although Obi-Wan Kenobi's discovery of the clones on Kamino was unexpected, Sidious allowed Tyranus to continue to manipulate the Confederacy of Independent Systems as Count Dooku. Sidious then turned his attention to Anakin Skywalker, knowing that young Skywalker was much stronger in the Force than Tyranus. After arranging to be captured by General Grievous during the First Battle of Coruscant, Palpatine then ensured that Dooku would have to face Obi-Wan and Anakin in battle. Although Tyranus' powers were more than a match for Obi-Wan, he was unable to defeat young Skywalker. Tyranus remained resolute, however, believing that his Master would rescue him in the end. Sidious had no such plans, however, and went as far as ordering Anakin to kill Tyranus. The young Jedi managed to acquire Tyranus' lightsaber and swiftly beheaded the treacherous former Jedi. Palpatine then put into motion his plans to take Anakin as his new apprentice.