It is not known to evolve into or from any other Pokémon.
They appear in the aftermath of nuclear fallout. They feed on radiation and can clean an irradiated area over time.
Hazma is a small rounded Pokémon, with light green spikes running down its back and tail, making it appear somewhat dinosaurian. Its body resembles a yellow hazardous materials suit, with a face resembling a respirator or gas mask, and a zipper-like marking running down its stomach. It has two stubby legs, the feet of which are green.
Hazma is genderless.
Hazma is one of the few stable Nuclear types, the others being Nucleon and Urayne. Its leaded skin makes it immune to nuclear radiation.
Behaviour and Habitat
In the aftermath of a nuclear accident, groups of Hazma will appear and feed on the radioactive gas, eventually cleaning the air of the area over time.