General Grievous

General Greivous is a four-armed Jedi hunter from the Star Wars saga. A mechanical, forbidding figure, he sided with the Trade Federation until he was destroyed by Jedi Master Obi-Wan Kenobi in a lightsaber duel in Star Wars Episode III: Revenge of the Sith. Greivous is actually 95% droid (mechanical) and 5% living creature, and has a metallic voice and occasionally coughs, which gives him his rugged, alien cyborg quality. His strong metal plating accounts for the majority of his body, but he still has internal organs hidden, including a small brain and heart supported by few blood vessels and arteries. He mainly serves Count Dooku, a Sith Lord, who gives him the majority of his commands. Dooku also trained Greivous in the Jedi arts, allowing him to deal with opposing Jedi in saber-duelling combat.

General Greivous has a negative, demanding personality. He easily becomes impatient with battle droids that serve him when they do not fulfill his desires. It is not uncommon for him to destroy one of his droids in his anger. Although General Greivous is strong, he sometimes underestimates the power of the Republic and the Jedi which leads to his loss in some of the war battles.