Haro is Charon — the ferryman of Greek mythology, son of Erebus and Nyx, whose sacred duty was to carry the souls of the properly buried dead across the Rivers Styx and Acheron. He served Hades in this capacity until the Devil claimed the throne of the Underworld and displaced the old order. Hades, in his final days, had fallen in love with the beautiful Persephone — but Persephone had in turn fallen in love with Haro. Zeus, seeking revenge, decided to intervene. Now, under the new lord of the Underworld, Haro has been assigned a different kind of mission: collect as many souls as possible and eliminate the Olympian Gods.