Chris Evans, Chris Hemsworth, Mark Ruffalo, and Robert Downey Jr. all play the main four superheroes of the Avengers Initiative- Captain America, Thor, The Incredible Hulk, and Iron Man. (In my opinion, since I'm a huge fan of Black Widow & Hawkeye, I don't like how some people name all the Avengers, but don't include Black Widow & Hawkeye. But that's all right cause these four guys still rock!)