Kirt Niedrigh is a fictional character, a semi-reformed supervillain in the DC Comics Universe. 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 supervillains calling themselves the "Justice League of Earth", which help to enforce a xenophobic agenda that Earth has adopted. He first appears in Superboy and the Legion of Super-Heroes #218 (July 1976), and reappeared as Earth-Man in Action Comics #858 (Late December 2007), the first part of the "Superman and the Legion of Super-Heroes" story arc.