Superhero Costumes for Dogs -- Your pet will look super cute with a Superhero costume for dogs. Smaller sizes fits, cats, too! From our line of DC Comics, we carry a variety of Batman, Superman, and Wonder Woman dog costumes. Fans of Marvel comics will love our Spider-Man, Captain America, and Thor pet costume. We even have an Underdog costume so your pooch can run and play in humorous style. These adorable costumes are great for family photos, outdoor events, and trick or treating with the kids on Halloween. Up, up and away!