Anti-Batman
From superman.nu: Supermanica
A criminal identity briefly assumed by Gotham City police commissioner James W. Gordon in August 1966. While visiting Superman's Fortress of Solitude, both he and Daily Planet editor Perry White were accidentally exposed to an alien gas known as Formula X-22. The gas radically altered the personalitles of both men, giving them highly criminal tendencies. Deciding to use their intimate knowledge of Superman's and Batman's secrets, Gordon and White planned to humiliate and dispose of both heroes. While White assumed the guise of Anti-Superman, Gordon fashioned a dark green variant of Batman's uniform (complete with a lead-lined mask to prevent Superman from discovering his real identity with his X-ray vision) and called himself Anti-Batman. After stealing many secrets from both the Fortress and the Batcave (including the secret plans for the Batmobile and Batman's own utility belt), Anti-Batman and Anti-Superman launched their planned campaign to dispose of Superman and Batman. Anti-Batman first clashed with both Batman and Robin during a high-speed chase in which the villain used his own Batmobile duplicate (called the "Anti-Mobile") to run the Dynamic Duo off the road. In addition, Anti-Batman and his partner-in-crime raided the State Police Building midway between Metropolis and Gotham City, stealing various mementos from Batman's battles with his greatest foes (including the Joker, the Penguin and the Riddler), and giving them to the imprisoned criminals themselves. Anti-Batman used an abandoned cellar located in a storm drain directly beneath Gotham Police Headquarters (accessable only by Gordon and Batman) as a base of operations for his and Anti-Superman's crusade against the World's Finest Team. After Batman deduced the true identities of both villains and discovered their headquarters, Superman arrived and exposed Anti-Batman and Anti-Superman to an antidote that counteracted Formula X-22's effects, restoring Gordon and White to their normal personalities. Sometime later, the youth serum wore off and returned both men to their normal ages. (WF No. 159/1, Aug. 1966: "The Cape and Cowl Crooks!")
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