The Mission to Mustafar was a mission to kill the Separatist leaders on the volcanic planet Mustafar by Darth Vader, during the end of the Clone Wars. In 19 BBY, Darth Sidious, the Dark Lord of the Sith, sent his new apprentice, Darth Vader on a mission to kill the remaining members of the Separatist Council on the volcanic planet Mustafar. The Council, consisting of the surviving top members of the Confederacy of Independent Systems, was a loose end in Sidious's plot to gain control of the Republic and mold it into the galaxy's first empire.