RX-78 Gundam of Magellan in the Central Continent increased the power of the entire Gundam in the battle with Bradzagu, becoming the Perfect Gundam. Later, due to his achievement in saving the Command Gundam's predicament, he accepted the power increase and transformation. After Command Gundam was injured and withdrew from the front line, he became active as the combat captain of G-ARMS.
G-ARMS combat captain. According to Command Gundam's special training, the Gundam team was able to enhance their strength. Can transform into a tank form and use the "Lion's Teeth" deadly skill to collide with enemies.
Its left shoulder is equipped with a set of GRXG-099 steel armaments, which is a composite armament that combines high-energy beam cannons, double barreled Gatling guns, triple mounted super cannons, and smoke emitters. In addition, it is equipped with a bidirectional beam rifle, winch shield, double barreled rocket launcher, close range defense machine gun, fire god gun, Buckmaster knife, and other armaments.