In the Marvel Universe, the Avengers team is composed of superheroes who work together in order to save the world from dire threats. Although this group has been comprised of heroes over the years, some villains have entered into the fold, too, only to come out as heroes in the end. Some examples include Hawkeye, Quicksilver, the Scarlet Witch, and most recently, Red Hulk (or Rulk).
When it comes to animals in comic books, you can never be too careful. Throughout the Marvel and DC Universes, animals exist with amazing abilities who demonstrate as much courage and determination as their two-legged counter parts when defending Earth.
