General Grievous

Grievous was the Kaleesh cyborg general and leader of the Droid Army of the Confederacy of Independent Systems during the Clone Wars. Originally a Kaleesh warrior from the planet Kalee, he chose to receive cybernetic implants to increase his combat prowess. He was recruited by Count Dooku to lead the Separatist Droid Army, and trained in the art of lightsaber combat.