Ultimate Overdragon, Orichalcum Tyranno (究極強竜オリハルコンティラノ Kyūkyoku Kyōryū Oriharukon Tirano), or simply known as Orichalcum Tyranno or Tyranno for short, is the Partner Z/X of Sera Kurashiki.
Story[]
An egg left alone in the wild, Orichalcum Tyranno hatched just as Sera Kurashiki happened to be walking by. The baby immediately imprinted on her and began to follow the frightened child as she ran for her life, only catching up to her several miles later when she tripped. After Sera realized it wasn't going to eat her, the two have been together ever since.
