I would like to suggest<br/><br/>Toy Man and Mad Hatter. (Army types)<br/><br/>Captain Boomerang and Solomen Grundy. (Range and melee)<br/><br/>Black Adam and Bizarro (Magic and Alien)<br/><br/>Lex Luthor and Prometheus (Tech Masters)<br/><br/>Black Mask and Two-Face ( Crime Bosses)<br/><br/>Vandal Savage and Ra's al ghul ( String Pullers)<br/><br/>