Count Dooku of Serenno was a human male Jedi Master who was trained by Yoda and in turn trained Qui-Gon Jinn, and one of the main antagonists of the prequel trilogy. Born to the royal family of the planet Serenno, Dooku was rejected by his family as an infant upon the discovery of his connection to the Force, which his father in particular feared and, as such, abandoned him after contacting the Jedi Order to come and take him to Coruscant. During his training under Yoda, Dooku proved himself to be both strong with the Force and a master duelist, regarded by many as one of the best in the Order. Upon becoming a Jedi Master, he left the Order and returned to Serenno to reclaim his title and heritage as a nobleman. He later fell to the Dark Side and became the Sith Lord Darth Tyranus, Darth Sidious' second apprentice. Dooku helped Sidious with his galactic conquest plans, recruiting the bounty hunter Jango Fett as the template of the clone army that would be used by the Galactic Republic, and forming the Confederacy of Independent Systems from various planets and systems that wanted to become independent from the Republic, resulting in the Clone Wars. Dooku served as the figurehead of the Separatist Alliance throughout the Clone Wars, until meeting his demise at the hands of Anakin Skywalker in "", who decapitated him at Chancellor Palpatine's (secretly Darth Sidious) urgings, thus revealing that Sidious never cared about Dooku and merely used him to aid his plans.