The apprentice of Master Yoda, Count Dooku's interest in prophecy and ancient Jedi texts led him inexorably to the dark side. He somehow discovered the existence of the Sith, and became Palpatine's apprentice after the death of Darth Maul. Dooku's inherited title as Count of Serenno gave him vast political influence, which he used as leader of the Separatist movement during the Clone Wars. He was ultimately killed by Anakin Skywalker, realizing too late that Palpatine had tricked him.