It lives only in the Frantic Bay and has a even harder shell than its young form. It is the leader of a whole swarm and defends its territory from rivals and enemies. Because of its size it even eats ludroths in whole but also smaller fishes. It has a much higher concentrated poison it injects with its spikes. It has some predators like the Lagiacrus or the Dunkleosteus. After some time a young Pteraspis sheds its shell and replaces it with a skull of a Lagiacrus or Dunkleosteus to repel smaller carnivores and, because they're much harder than its usual shell, to protect its head. The weakness is dragon, then wind. It's the adult form of the Pteraspis (Minion).