Countless loose ends and terrifying mysteries still hang in the balance after the last season of Gotham, and major changes are on the horizon. The upcoming third season of FOX?s not-so-superhero drama will see the introduction of a 19-year-old Poison Ivy, the Mad Hatter, the mystery of the Court of Owls, and a few familiar faces returning ? but among the new cast is a Marvel alumni who seems to be taking on a very, very different role.