After discovering he had developed superpowers, Tomas Lara-Perez wanted to help people. However, he felt it was embarrassing to embrace the animal aspect of his powers, and decided to go instead with the alias of the Handsome Puncher. Once he enrolled at the Empire State University, he learned of Squirrel Girl. Inspired by the confidence she projected, Tomas decided to take a similar approach to fighting crime as her, taking up the alias of Chipmunk Hunk. At some point, Tomas also became the crime-fighting partner of Koi Boi.