<Li> Frank Oz voices Yoda: the leader of the Jedi Council . </Li> <P> Jimmy Smits, Peter Mayhew, Oliver Ford Davies, Ahmed Best and Silas Carson reprise their roles as Senator Bail Organa, Chewbacca, Sio Bibble, Jar Jar Binks, Nute Gunray and Ki - Adi - Mundi, respectively from the previous films . Joel Edgerton and Bonnie Piesse also reprise their roles as Owen Lars and Beru Lars, respectively from Attack of the Clones . Matthew Wood provides the voice of General Grievous, the fearsome cyborg commander of the Separatists' droid army; Temuera Morrison portrays the Clone Troopers and Commander Cody, who are clones of the bounty hunter, Jango Fett; Bruce Spence portrays Tion Medon, local administrator of Utapau; Jeremy Bulloch, who played Boba Fett in The Empire Strikes Back and Return of the Jedi, appears as Captain Colton, the pilot of the Rebel Blockade Runner Tantive IV, Wayne Pygram appears as a younger Grand Moff Tarkin; and stunt coordinator Nick Gillard appears as a Jedi named Cin Drallig (his name spelled backward, without the k). Editor Roger Barton's son Aidan Barton portrays Luke Skywalker and Leia Organa as infants . James Earl Jones possibly provides the uncredited voice of Darth Vader; when specifically asked if he had supplied the voice--either newly or from a previous recording--Jones answered, "You'd have to ask Lucas about that . I don't know". </P> <P> Director George Lucas has a cameo as Baron Papanoida, a blue - faced alien in attendance at the Coruscant Opera House . Lucas' son Jett portrays a young Jedi - in - training named Zett Jukassa . Lucas' daughter Amanda appears as a character called Terr Taneel, seen in the security hologram; while his other daughter Katie plays a blue - skinned Pantoran named Chi Eekway, visible when Palpatine arrives at the Senate after being saved by the Jedi, and talking to Baron Papanoida at the Opera House (she also has a brief speaking role in one of the deleted scenes where Padmé is meeting in secret with other senators). Christian Simpson appeared as a stunt double for Hayden Christensen . When Anakin, Obi - Wan, and Palpatine arrive via shuttle to the Senate docks after crash landing on Coruscant, the Millennium Falcon can be seen landing on one of the lower platforms as the shuttle approaches . </P> <P> Lucas stated that he conceived the Star Wars saga's story in the form of a plot outline in 1973 . However, he later clarified that, at the time of the saga's conception, he had not fully realized the details--only major plot points . He began working on Episode III even before the previous film, Attack of the Clones, was released, proposing to concept artists that the film would open with a montage of seven battles on seven planets . Michael Kaminski, in The Secret History of Star Wars, surmises that Lucas found flaws with Anakin's fall to the dark side and radically re-organized the plot . For instance, instead of opening the film with various Clone Wars battles, Lucas decided instead to focus on Anakin, ending the film's first act with his killing of Count Dooku, an action that signals his descent to the dark side . </P>

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