give Grievous an asthmatic cough; this was intended to emphasize the character's organic nature as well as the flawed cyborg prosthetics of the Star Wars prequel trilogy (which would later be refined for Darth Vader in the original trilogy). Some of the audio effects for Grievous' cough in Revenge of the Sith were recorded by Lucas himself while he had bronchitis. Grievous was created entirely through CGI in the film. During filming, Grievous' dialogue was read off-screen while Kyle Rowling wore a bluescreen or greenscreen suit to perform the character's fight scenes with Obi-Wan Kenobi. Wood would subsequently reprise his role as the voice of Grievous in The Clone Wars animated series and numerous video games. Characterization The official Star Wars Databank describes General Grievous as "a brilliant Separatist military strategist and a feared Jedi hunter". He is cruel, cunning, aggressive, murderous, and gains an infamous reputation for his ruthlessness during the Clone Wars. Grievous holds the title of Supreme Martial Commander of the Separatist Droid Armies, making him the absolute leader of the Confederacy of Independent Systems' military and the second highest ranking member of the Separatist Alliance (after Count Dooku, the political Head of State). Although aligned with the Separatists, Grievous does not care for their political ideals and has professed that he only participates in the conflict to eliminate the Jedi. He harbors a deep-seated resentment of the Jedi and has a vast collection of lightsabers claimed from his many victims as war trophies. Grievous is also short-tempered and has little tolerance for failure or weakness, as he frequently lashes out against and destroys his own battle droids for their persisting incompetence. Grievous' cyborg body was specifically designed to rival the abilities of the Jedi. Standing at 7 ft 1 in (216 cm), his imposing presence serves to instill fear in his opponents to give him a psychological advantage in battle. While he is not Force-sensitive, Grievous has been trained in all forms of lightsaber combat by Count Dooku. Each of his mechanical arms can separate in half, allowing him to wield four lightsabers at once to overwhelm his enemies. His cybernetic enhancements give him exceptional strength, speed and reflexes to outmaneuver Force-users and even the Force itself. In spite of Grievous' physical and acrobatic prowess, Dooku has advised him to retreat should he lose the elements of surprise and intimidation, and thus his advantage, in a