Fusoya, known in the Japanese version of the game as and FuSoYa in earlier versions of the game, is a Lunarian, and a resident of the moon. He watches over the other Lunarians in their long sleep and knows the true origins of Cecil, Golbez, the Crystals, and the real nature of the threat to the Blue Planet. Once Fusoya explains Golbez's innocence to Cecil, he joins the party to help defeat Zemus, returning to the planet just in time to fight the Giant of Babel. Inside the huge android, Fusoya dispels Zemus' mind control over Golbez, and the pair set off to fight Zemus at the core of the moon. While Fusoya and Golbez defeat Zemus' physical form easily, just as Cecil's group arrives Zemus transforms into Zeromus, a being formed from Zemus' intense hatred. Zeromus defeats Fusoya and Golbez, but is then vanquished by Cecil's group. Fusoya then returns to his sleep with Golbez and the rest of the Lunarians.