Nuclear Man

From Multiversal Omnipedia

Nuclear Man is an evil, blonde clone of Superman, created by Lex Luthor from a strand of Superman's hair stolen from a museum exhibit and stowed away aboard a nuclear missile along with some chemicals. When Superman threw the missile into the sun to get rid of it, Nuclear Man was created. Slightly more powerful than Superman, Nuclear Man spoke with Lex Luthor's voice and considered Luthor his "father," sharing Luthor's desire to see Superman destroyed. While most of his superpowers were similar to Superman's, he also had the ability to to shoot fire from his hands and eyes, levitate people and objects, and make his fingernails grow longer to become claws, which he used to pierce Superman's skin in their first fight, infecting him with radiation sickness. Nuclear Man's sole weakness is that without exposure to direct sunlight or a sufficiently bright indoor light, he goes into a weakened, inert state, during which time he is vulnerable.