The monstrous Grand Gundam came with several armaments, including two grand horns which could be used to impale an opponent. While the Grand Gundam usually stood on four legs, it could switch to two and use its massive front legs to crush an opponent. The four hands on the main body could also shoot out as projectile weapons or to help it move its massive frame. They also doubled as grand bombers, which could fire nearly unlimited ammunition charges. After its first appearance, the Grand Gundam returned again during the Finals. While George de Sand fought Gentle Chapman's John Bull Gundam, the Grand Gundam appeared out of a cloud of black smoke. George barely repelled the Grand Gundam with his rose bits. The Grand Gundam returned again when Chapman attacked Domon's God Gundam on Rantao Island. Chibodee Crocket and George came to Domon's aid and managed to destroy the Grand Gundam, but their own Gundams were heavily damaged in the battle.