Source: dc.wikia.com

8. Terra Man

LOOK, I'M GONNA TALK ABOUT A SPACE COWBOY NOW BECAUSE THAT IS MY JOB.

Terra Man is SO gosh-diddily-darn rad, it isn't even fair. Tobias "Toby" Manning was born to father Jess Manning in the Old West. But when Toby was little, Jess was murdered by a space alien known as the Currency Criminal (because let's be honest, at a certain point all the good alliterative names were taken), who adopted Toby as his ward.

He trained Toby in alien weaponry, but because Toby seemed kinda dumb, all the weapons had to be retrofitted to look like Old West guns. Toby killed the Currency Criminal, and took to space as Terra-Man, outer space outlaw! Eventually, Superman showed up and hit him in the face a bunch, stopping his plans, but man, how badass he was until then.

He eventually died off-panel, when he and The Parasite (who had partnered up) apparently killed each other. And, look, I love Terra-Man, but boy, was Parasite slumming it that week.