Count Dooku

Count Dooku was a Sith for the CIS. He was trained by Lord Sidious and later he got his first apprentice named Asajj Ventress. He was first a former Jedi and trained Qui-Gon Jinn but after the death of Qui-Gon he left the Jedi Order. He started to train more intensive alone by the side of the Dark Lord. He was soon finding out that Vicious Opress wanted revenge for his lost brother and should search for Dooku.