The limits of his powers are unclear, but he seems to be able to wrest control of anything that emits light. Such things have included Green Lantern constructs, Superboy 's heat vision, and magic lightning from Wonder Girl 's lasso. He is also able to take the "internal" light away from light powered characters, the heroic Doctor Light and the Ray, leaving them temporarily powerless. He also has the ability to create holographic images. Despite his frequent defeats, he is quite powerful.