Is there a superhero based on every species of animal and insect yet? If no, then why not? Surely there could be a Wombatman, or a Captain Dung Beetle? Conversely, it stands to reason that every species must also have its own versions of superheroes based on other animals, such as Catdog, or Kangarooduck.
On a completely unrelated note, I noticed that I drew the guys' arms in the first panel way too short. I know that my cartoons are not always 100 percent anatomically accurate, but those arms are a bit ridiculous. I'll try to pay better attention to that in the future.