FusionDex

Tyrantrum's ferocious temperament means it rarely sleeps, driven by hunger and rage at all times. The breathing holes in its armor let it better oxygenate its brain.

Thanks to its gargantuan jaws, which could shred thick metal plates as if they were paper, it was invincible in the ancient world it once inhabited. A Tyrantrum is so overwhelmingly powerful, it can bring down a whole mountain to make its nest.