Seymour Gutz (IDW)

Created by Null Group, the Mutagen Man is a failed attempt at combining several different animal breeds into one mutant. The find him strapped to a bed, and free him. Although he is told that he's being saved, Mutagen Man has a different idea of the term - by forcing Old Hob's gun to his dome and urging him to fire. Hob refuses and they all escape the facility together.

Trivia
Mutagen Man's origin of a mutant hybrid of many animals is similar to Peter Laird's original concept of the character ("The Unknown")