General Grievous is the chief antagonist in Star Wars Episode III: Revenge of the Sith, alongside Count Dooku, Darth Vader, and Palpatine. He was voiced by Matthew Wood. According to the Revenge of the Sith DVD, series creator George Lucas instructed his creative team to create an enemy that foreshadowed Anakin Skywalker's transformation into Darth Vader: the heavy breathing, the cyborg body, and his seduction into a malevolent faction.
Despite his hunched appearance, Grievous is very deadly with a lightsaber, having hunted and killed Jedi knights and kept his victims' lightsabers as trophies. Combined with his cybernetic body, which is capable of wielding up to five lightsabers at once (counting one held in one of his feet, the other being used to stand on) he makes a deadly foe in close combat to all but a master Jedi. However, he usually wields only four in his hands. He has been trained in the Jedi arts by Count Dooku.