The Inconsiderate Bulk

Brian Banno was a brilliant scientist and engineer, and also, according to his friends, a total jerk. But Brian also holds a terrible secret. Ever since a strange accident with a theta radiation powered cheese-grater, when  Brian gets mad, he transforms into a huge, belligerent, insensitive, rude creature the public has nicknamed "The Inconsiderate Bulk." The Bulk has inadvertently saved the world many times, but that doesn't stop him from acting like a jackass.

Gamma Bunny

A massive, gigantic bunny rabbit infused by radiation during a gamma bomb test. Gamma Bunny has the strength of a thousand men, but the intelligence of a raging wild animal. He is incapable of any higher thought, and acts merely from base impulses - hunger, thirst, fatigue, and so on. It is thought that if a human being were to be exposed in a similar fashion he would retain some semblance of intelligence (although to a greatly reduced capacity.) Gamma Bunny seems to revert to normal bunny form whenever he is not in danger.