Kirk Niedrigh is a semi-reformed super villain that was coerced into joining the Legion.
Created by Cary Bates and Mike Grell, Niedrigh is a former hopeful for the Legion of Super Heroes under the guise of Absorbency Boy. After being rejected from the team, years later he resurfaced as Earth Man leading a group of super villains called the Justice League of Earth, which help to enforce a xenophobic agenda that Earth has adopted. He first appeared in Superboy and the Legion of Super Heroes # 218 back in 1976. And re-appeared as Earth Man since 2007.
Sorry Legion fans it toke a long time to come up with a Legion related post. I've been ridiculously busy with multiple projects. About to launch my own website, building a UFO art car for Burning Man etc etc...
Besides I think I'm running out of characters, at least the main ones.
Hope you like it, cheers!