Count Dooku, also known as Darth Tyranus, is a prominent antagonist in the Star Wars prequel trilogy. Once a respected Jedi Master, he becomes disillusioned with the Jedi Order and the Galactic Republic, ultimately joining the Sith under Darth Sidious. As leader of the Separatists, Dooku orchestrates much of the Clone Wars, demonstrating formidable skill with a lightsaber and mastery of the Force. His character embodies elegance, intelligence, and a complex sense of morality.