Dooku was a Force-sensitive human male Serennian who served as a Jedi Master during the waning years of the Galactic Republic and later Count of House Serenno. He became dissatisfied with the Jedi Order and fell to the dark side of the Force, becoming the Dark Lord of the Sith Darth Tyranus. After leaving the Jedi Order, he served as Count of Serenno and Head of State of the Confederacy of Independent Systems during the Clone Wars.
