RG-G1 was stationed aboard the Tribunal that was sent to Mandalore in the final days of the Clone Wars. Following Maul's capture during the end of the Siege of Mandalore, the 332nd Company and former Padawan Ahsoka Tano escorted him back to the Tribunal. Shortly after, the ship jumped into hyperspace to return to Coruscant.
RG-G1 aboard the Tribunal
Following the execution of Order 66, G-G, along with fellow astromech droids R7-A7 and CH-33P, agreed to assist Tano after she came looking for help upon evading execution by Clone Commander CT-7567 and his men. The astromech aided Tano in her apprehension of Rex by helping the other two droids stop him and trap him between blast doors. R7 shocked Rex unconscious after Tano revealed herself to him, and the droids carried him to the medical bay, where he could be operated on and have his inhibitor chip removed. While the procedure was ongoing, since the other clones were attempting to break into the room, Tano ordered G-G to be ready to re-seal the door. The clones did eventually manage to get the door open, but she was eventually able to close it again before assisting Cheep in welding the door shut.
Ahsoka, Rex, and the droids fought their way out of the medical bay in order to reach the hangar of the Star Destroyer. Once reaching the command center of the hangar, Ahsoka ordered G-G to find out what had happened to the Venator by accessing the computer. G-G subsequently informed them that the hyperdrive had been destroyed: unbeknownst to Tano and Rex, this had been done by Maul, who Tano had earlier released from the detention block as a distraction. The droid also revealed that the doomed Star Destroyer, which had subsequently fallen out of hyperspace, was now caught in the gravitational pull of a nearby moon. Meanwhile, R7-A7 opened the doors to Bay 12 and revealed a large number of clones, led by Clone Lieutenant CT-5597 "Jesse", waiting for them in the hangar. As Ahsoka and Rex distracted the clones by faking Ahsoka's capture, the droids snuck through the hangar behind them.
The droids lowered the lifts in the hangar in order to assist Ahsoka and Rex in their fight against the clones before Maul entered the hangar, attempting to steal the shuttle. Maul knocked Ahsoka off balance and she nearly fell into the opening created by the lowered platforms, however G-G caught her with a suction cup and attempted to pull her up. As Ahsoka was occupied, Maul entered the shuttle and managed to almost fly out of the hangar before Ahsoka pulled him back with the Force. She managed to hold onto the shuttle for several moments before letting him go in order to defend Rex. In this time frame, R7-A7 was destroyed by a blaster shot.
Following Maul's escape and R7-A7's destruction, Cheep and G-G continued to raise and lower the lifts in the hangar to allow Ahsoka and Rex to reach a ship in the lower deck. However, after raising the platforms, the clones located the two droids. G-G and Cheep attempted to surrender, but the clones executed them.
RG-G1 "G-G" was an astromech droid with black and gold plating, equipped with a scomp link. G-G was very loyal and was willing to help Ahsoka Tano escape despite the danger. G-G also showed a great deal of bravery, willingly going into a dangerous situation to assist Tano.
RG-G1 first appeared in the Star Wars: The Clone Wars seventh season episode "Shattered." G-G's full name was first given in the accompanying Bucket List video. Her paintjob and name may be based on the Pennsylvania Railroad GG1 Electric Locomotive.
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