9. Iron Man
Iron Man is probably the best origin story a Superhero could ever have. It actually began the era of Robert Downey Jr. and made him one of the biggest stars in Hollywood. It grossed $585 Million at a budget of just $140 Million.
Before Will Smith rocked as Deadshot in the Suicide Squad, he was John Hancock. Even though this might be the weakest Superhero movie on this list, it still managed to earn a shocking sum of $624 Million at the worldwide Box office at a budget of $150 Million.