Which DC Comics character could save DC's non-Batman/Superman movies?S

So it's pretty official: Green Lantern is not rolling in green. What happens next for DC Comics? The next Batman movie is nearly a sure-fire hit, and there's still Superman... at least, for now. But what about other DC characters?

Top image: Superhero nails by ThaJuddy on Deviant Art.

What DC needs now is a solid, out-of-the-park hit with a second-tier character: an Iron Man. A big movie featuring a character who's neither Super or pteropine would give DC a feeling of depth to their universe, and reinforce the idea that they're more than just a two-trick pony. Or maybe a team-up movie. But which DC Comics character or team is A) as well known as Tony Stark, and B) capable of crossing over to the big leagues?

Vote for your preferred DC movie god below!