The folks behind the crowd-pleasing "How It Should Have Ended" have teamed with Klomp! Animation to launch "Hero Swap," a new series that takes a popular film and replaces the hero with another character. First up: Gladiator, starring ... Iron Man.

Tony Stark could totally blast his way through those other gladiators, right? Where would be the fun in that? In kinda-sorta second-century Rome, the billionaire playboy has to contend with a dwindling power source, and a Captain America who's not so quick to send aid.

But that's only the beginning of Iron Man's problems ...