As a member of Alexander Luthor Jr. 's Secret Society of Super Villains, he aids Merlyn and Deathstroke in defeating Green Arrow in Star City. Doctor Light then attacks and absorbs a great deal of power from Kimiyo Hoshi. He later participates in the Battle of Metropolis in Infinite Crisis #7, where he is defeated by the combined efforts of the Ray, Black Canary, Martian Manhunter, and Kimiyo.