The Avengers are a fictional team of superheroes appearing in American comic books published by Marvel Comics. The Avengers originally consisted of Hank Pym, Hulk, Iron Man, Thor, and the Wasp. The original Captain America was discovered, trapped in ice, and joined the group after they revived him. A rotating roster became a hallmark, although one theme remained consistent: the Avengers fight "the foes no single superhero can withstand." The team, famous for its battle cry of "Avengers Assemble!", has featured humans, mutants, robots, aliens, supernatural beings, and even former villains.