R4-G9 was taken to Pau City on the planet Utapau, where after a negotiating with the Pau'an Tion Medon, Kenobi ordered that she fly his Jedi interceptor back to the Vigilance to report to Commander Cody and prepare the 212th Attack Battalion for the Battle of Utapau.
Sometime before the Battle of Utapau, R4-G9 was produced by Industrial Automaton. During the Clone Wars, she was owned by Jedi Aayla Secura, who once loaned the droid to the human Jedi Master Obi-Wan Kenobi of the Jedi High Council for his search for Asajj Ventress. In 19 BBY, R4-G9 once again worked with Kenobi just days after the Battle of Coruscant, where his previous astromech droid, R4-P17, was destroyed by buzz droids. R4-G9 served as the quick replacement for his old droid companion.
R4-G9 was taken to the planet Utapau where Kenobi landed his interceptor in front of Pau City to converse with the Pau'an Port Administrator Tion Medon about the location of General Grievous. A group of Utai came to work on his starship as the conversation began. Medon stated that the Kaleesh was situated on the tenth level with thousands of Battle droids ready for attack, and Kenobi would later tell R4-G9 to fly back to the Vigilance to inform Cody, the Clone Marshal Commander of the 7th Sky Corps, which would later strike attack against Grievous and his droid army.
In July 2003, George Lucas decided to let subscribers of the StarWars.com Hyperspace feature determine the look of a new astromech droid to appear in the upcoming finale to the Star Wars prequel trilogy, the 2005 movie Star Wars: Episode III Revenge of the Sith. Four color schemes were proposed, the first was a striped design, with a metallic gray blue pattern along a pewter dome. The second color scheme featured a metallic camouflage green eye and selected panels, aluminum panels, and a pewter dome. The third design had an embossed circuitry look with raised surface detail on a gunmetal gray head. The last design was very metallic, featuring copper panels on a bronze dome. Ultimately, the fourth color scheme was chosen, and went on to appear in Revenge of the Sith.
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