Gamahiro is a large toad who dwells on Mount Myoboku and is sometimes referred to as "Hiro." Initially, his skin color was green and brown in the anime, but it was later changed to light blue-green for the Invasion of Pain Arc to match the manga's artwork. Although Gamahiro first appeared in Part I, he did not receive a name until he was summoned again in Part II. Despite appearing in the anime, Gamahiro has yet to speak in the manga.