Dr. Regulus

Doctor Zaxton Regulus was working in a nuclear plant on latter 30th Century Earth, experimenting with the concept of multiplying solar energy via radioactive gold isotopes. An unforseen accident casued the experiment to explode, taking the life of a young lab assistant and injuring Regulus and Dirk Mogna, the son of the plant manager. Regulus was fired and blamed Dirk for his dismissal. Seeking revenge, Regulus used robots to beat Dirk and left himto die in the core of the plant's reactor, but Dirk survived and inadvertantly gained super powers.

Regulus then adopted a criminal lifestyle and continued experiments with radioactive gold. He clashed with the Legion of Super Heroes and with his old nemesis Dirk Mogna, who was now the Legionnairre named Sun Boy. Realising that even the radioactive gold powered devices he had created could not defeat the Legionnaires, Regulus created the artificial Arion star and used its energies to give him solar powers.