FusionDex

Primetrum has been described as pure prehistoric rage. It can destroy whole mountain ranges during a rampage, and said rampages do not end unless it is forcibly dealt with or exhausts itself to complete unconsciousness.

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. When it becomes furious, its blood circulation becomes more robust, and its muscles are made stronger.