Count Dooku, a Force-sensitive Serennian human male, was a Jedi Master who fell to the dark side of the Force and became the Dark Lord of the Sith Darth Tyranus during the final years of the Galactic Republic. After leaving the Jedi Order, he served as Head of State of the Confederacy of Independent Systems during the Clone Wars. He was the second apprentice of Darth Sidious, the Dark Lord of the Sith whose plan to conquer the galaxy relied on Dooku leading a pan-galactic secessionist movement against the Republic. As such, Dooku immersed himself in the dark side and worked tirelessly to advance his and his master’s plans, but ultimately forgot that treachery was the way of the Sith, while also being unaware that he was just a pawn of his master.