Source: dc.wikia.com

3. Adam Strange

Adam Strange should be a way bigger deal than he is. He's like Buck Rogers meets Indiana Jones.

Adam was an archeologist who accidentally stumbled upon an energy warp to another world. This Zeta Beam, as it was called, sent him to the planet Rann, where he became their greatest champion.

But the Zeta Beams were only temporary, meaning Adam kept returning to earth and having to find his way back to his true home. It's world travelling high adventure with "˜50s space age aesthetics and that is so of a time and yet so classic. It's so dated that it becomes timeless. And while he's had a couple mini-revivals, he's never quite caught on.

Maybe it's because he's not really a traditional superhero and as such doesn't quite fit in with the Justice League caliber dudes.