The one who, under the influence of the evil Dark Lord of the Sith, Darth Sidious, got all of the big, feeling disenfrancised corporations together to create a droid army known as the Confederacy of Independant Systems (CIS). He was born on Sereno and died aboard General Grievous' battle cruiser by Anakin Skywalker in a scissor motion with lightsabers.
Dooku: "Master Kenobi, I'm disappointed in you. Yoda holds you in such high esteem."
The two of them: *striking and parrying one another's strikes*
Dooku: "Surely you can do better!"
London Symphony Orchestra: *plays dark music as Obi-Wan gets beat down*