This ancient Pokémon is a prodigious nocturnal predator, its colossal jaws can crush even the strongest metal. During the nights, when its body glows, Umbtrum pierces the silence with terrifying roars that can be heard many miles away.
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. Umbtrum evolved from exposure to the moon's energy pulses.
