While Dr. Wattz was working on his research on hydraulic energy, he made tests on a little crustacean which he then immediately discarded, thinking that they hadn't had any effect on it. He returned the crustacean to the sea and he never knew that it would grow up to become Calamitabyss, a terrible beast who now brings calamity to all abyssal creatures. He has a sixth sense, so there's no hiding from him!

Calamitabyss is a Water Attacker with Instant Defeats, Death Countdowns, and Drowned skills.

Evolving Trait:
Rank 0: Hardened
Rank 1: Immune to Bleed
Rank 3: Status Caster - Gains Immunity to Possession at the start of the battle