|Universe||Ben 10 Universe|
|Average Height||Human height|
Prypiatosian-Bs are a race of aliens from an unknown planet in the Andromeda Galaxy. They are made of radioactive energy, and they can use that energy as a weapon. they eat all forms of energy. Their favorite food is nuclear energy, which increases their powers and size. Prypiatosian-B criminals are put in a containment armor as a punishment for their crimes.