This isn't really a cheat, it's just something that happens in the game. The more Genisis Trees you revive, the bigger the character's Ra-Seru gets. By the time Ozma is lv. 2, he's bigger than Gala's head! And Meta gets big long claws that come out from his backside and front! And the way Terra used to fit over Noa's Hand and fingers, she starts growing out like a half sphere.