Dooku’s lightsaber, also known as Darth Tyranus’ lightsaber or Dooku’s Sith lightsaber, was the personal curved-hilt lightsaber of Dooku, the Count of Serenno. The former Jedi Master, who became Darth Tyranus and the political leader of the Separatist Alliance, handcrafted the weapon’s unique hilt with a kyber crystal that emitted a red blade. As the apprentice of the Dark Lord of the Sith, Darth Sidious, Dooku used the Sith blade against his foes.

The weapon was built for the purpose of lightsaber combat, and the Sith Lord carried it with him into numerous battles during the Clone Wars against the Jedi, a conflict he and his master orchestrated from both sides. In his final bout, Dooku lost his Sith lightsaber to the Jedi Knight Anakin Skywalker once he was defeated in a duel aboard the starship Invisible Hand. Skywalker used Dooku’s own weapon to behead the Sith Lord and end his life.

When he was a Jedi Master, Dooku set aside the lightsaber he had used as a Padawan to create one that was superior. The new lightsaber used a personalized design, and it had no connection to his master, Yoda, or to the fashion of that time. Dooku studied the Jedi Archives‘ records to make the design, and the lightsaber was made to suit his technique, and favored long, elegant moves and deftness of hand. He continued to use the blade even after he became a Sith, but by then his lightsaber had begun to generate a red-colored blade as a result of Dooku utilizing a red kyber crystal provided to him by his new master, Darth Sidious.

Unlike any standard lightsaber, Dooku crafted his with an unusual curved shape, which helped control the weapon when in a duel. Primarily, it allowed Dooku greater finesse and precision in combat when lunging or slashing at an opponent. This was done by Dooku as he considered himself a sophisticated duelist, often able to use his lightsaber under the control of only one hand, and against multiple opponents.