After returning to Earth, in DC Universe #0, Doctor Light is a member of Libra 's Secret Society of Super Villains. In Final Crisis #1, he and Mirror Master are sent by Libra to recover Metron 's chair. They are briefly challenged by Empress, Sparx, and Más y Menos, but defeat them by combining Light's beams with Mirror Master's mirrors. Light also aids the Human Flame and Libra in the murder of the Martian Manhunter.