Count Dooku (performed by the late Christopher Lee) is a Sith Lord, the leader of the Separatists, and the main antagonist of Jaden's Adventures of Star Wars: Attack of the Clones.
Dooku was once a member of the Jedi Order, one of the most powerful, until he turned to the dark side and became Darth Sidious' apprentice, and became Darth Tyrannus. The reason because of the growing corruption in the Senate and because the death of his former apprentice and friend Qui-Gon Jinn. Dooku led the Separatists to overthrow the Republic, and even created a Battle Droid Army to do so. Dooku hired a bounty hunter named Jango Fett to assassinate Padme. When a battle took place on Geonosis, Dooku and the Separatist Council had to flee the planet, but Anakin and Obi-Wan confronted him. Dooku beat Obi-Wan and cut off Anakin's right arm. Yoda than arrived and faced his old padwan, but lost after saving Obi-Wan and Anakin from being crushed by a pillar. Dooku escaped and made it to Coruscant with the plans to the Death Star. Throughout the Clone War, Dooku became a master to Asajj Ventress, but later betray her cause of her many failures.
In Jaden's Adventures of Star Wars: Revenge of the Sith, Dooku launched an attack over Coruscant, and held Palpatine hostage. Dooku faced Anakin and Obi-Wan again, but lost to Anakin and was killed.
- Dooku will become Jeffrey's enemy in Jeffrey & Friends' Adventures of Star Wars: Attack of the Clones.