Fan Casting Luminus in Return to the DC Universe

An associate to Dr. Arthur Light, Dr. Edward Lytener had helped him in some of his early days as Doctor Light with the suit Light took from Jacob Finlay when he killed him. When his mentor was killed by the Spectre during the Final Crisis, Lytener took what knowledge he had of the tech Arthur Light used, and modified it to turn himself into his mentor's successor, as Luminus, first battling Kimiyo Hoshi's Doctor Light, before he was defeated. However, Lex Luthor saw potential in Luminus, and has offered him a seat in the Legion of Doom.