Aristides Demetrios is a Greek national who wears the mythical Golden Fleece, which grants him the strength of Hercules and various other powers connected to the heroes who comprised the Argonauts. He aids Wonder Woman battling Colonel Conquest in Greece, where a bomb was supposed to be hidden. In one incident, he helps Superman stop a gathering of mystical artifacts designed to bring back the villain Thaumar Dhai. They encounter Echidne, an old adversary of the Olympian, a beautiful woman with a long, gigantic snake form instead of legs. Olympian would later join Superman and many fellow Guardians on Easter Island. They would again battle Echidne and her fellow mystics. Dhai's mystical return is reversed and he is seemingly destroyed. The Greek hero later meets Fury of Infinity Inc..