Board Thread:Theories and Rumors/@comment-33590000-20180712205034/@comment-26921673-20180713004741

Iron Baron might want to use the Dragon Armor to control Firstbourne so that he can either use her to open a portal to the Departed Realm, and bring back all Oni (that is if he himself is Oni), or Iron Baron with the Dragon Armor might bring about this "darkness" Garmadon was harping over.