The Ultimate God is located at the bottom of the Aerial Fortress Seibal, and is sleeping since ancient times. In the past, rituals were conducted between Duel Priests, in order to combat and seal this being, who people feared. It is said that should a Duel Priestess lose the ritual Duel, the Ultimate God shall awaken. It also appears that in order to keep this God sealed, not only the Duel Priestess must win, but she should also be offered as a sacrifice for the God.