Doctor Double X

Doctor Double X (originally called Doctor X and Double X) is a fictional character in the DC Comics universe. The character is a supervillain who has fought the Batman and Robin several times in Gotham City. Dr. Simon Ecks discovered that human auras could be enhanced to function outside of the body. When Ecks created an energy-duplicate of himself, the introverted scientist's unstable mind became dominated by the doppelgänger he named Double X. The villain fought the Batman several times, only to be returned to Arkham Asylum time and again. Once, he traded opponents with Flash foe Rainbow Raider. Doctor Double X was later seen as a guest at the San Francisco sci-fi convention. Doctor Double X's energy-duplicate shares the consciousness...