Mega Neutron and Supreen are from a race of small angry superheroes that have found a home in New York City. Mega Neutron has had it with Supreen's messy living habits. After a alley cat shits on their cardboard box porch, Mega Neutron looses it. He takes his aggression out on the cat and rolls into the street. After they are plowed over by a truck, Mega Neutron's mean side splits off to create, Nega Neutron.