RX-78-3 Gundam "G-3"

During the attack on Side 7, in September UC 0079, two of the three RX-78 Gundam prototype mobile suits were destroyed. The destroyed parts made their way to the Pegasus-Class assault cruiser White Base, and then to the Earth Federation's General HQ in Jaburo. Once there, the parts were cobbled together and the RX-78-3 "G-3" Gundam was born. The G-3 Gundam became a testbed for the magnetic coating that was later applied to Amuro Ray's RX-78-2 Gundam. Visually, the G-3 is very similar looking to the Gundam, except for its gray and blue paint scheme.

In the novel version of Mobile Suit Gundam, the G-3 became Amuro Ray's mobile suit in the later half of the war after his Gundam was destroyed in battle with Zeon Newtype Lalah Sune. It had the magnetic coating added to the joints to increase response time for its pilot. Other than the gray color scheme, it is identical to RX-78-2. The G-3 Gundam was later destroyed in battle by a member of Char's Rick-Dom Squad, which proved fatal for its pilot.

First appear as part of Mobile Suit Variations model kit series, design by Kunio Okawara.