History: (Plastic Man #12) -A group of humans developed gills, and were forced off land by their neighbors. These Fish-Men adapted to undersea life, but eventually they died out, all except for Riverman. Fearing humans, he went berserk when the South River Tunnel Project invaded his domain, and he killed every undersea worker he came across. Plas investigated and used Woozy as bait. Riverman failed to kill Woozy, but Plas failed to capture him. Riverman decided to put an end to the project, going on land, killing a worker and dressing in his clothes. He tried to dynamite the tunnel, but was stopped by Plas. As he told Plas his history he died because he’d been out of water too long.