20 Amazing Marvel Cinematic Universe Cameos You Never Noticed

12. Sam Rockwell (All Hail The King)

Iron Man 2 was a mess, but if there's one character from the crowded movie who fans wanted to see even more of after the credits rolled, it was Sam Rockwell's Justin Hammer. If you're not someone who watches special features, then you probably missed his surprise appearance in Marvel One Shot All Hail The King; he was in the same jail as Trevor/The Mandarin, and appeared to have developed a very close relationship with a fellow inmate...