Owlman is the name of several fictional supervillain published by DC Comics who are the intended reverse counterparts of Batman. Owlman first appeared in Justice League of America #29, August 1964 and was created by Gardner Fox and Mike Sekowsky. He was created as an evil version of Batman because owl are known to prey on bat.
Originally, Owlman is an unnamed superintelligent supervillain who was created as an evil counterpart to Batman, and is a member of the criminal organization known as the Crime Syndicate of America who originated and operated on the reverse Earth-Three. In some of the pre-Crisis Crime Syndicate appearances, the Earth-Three Owlman also had the ability to briefly control other people's minds, though it is unclear how he acquired this ability. The Pre-Crisis Earth-Three Owlman and all members of his Crime Syndicate were killed during the Crisis on Infinite Earths miniseries at the hands of the Anti-Monitor.
The Owlman character was revived (along with his teammates) in the late 1990s for modern DC continuity in the graphic novel JLA: Earth 2. This Owlman was developed to be reflective of the modern readers with a far darker attitude and background than either of the two previous teams. On antimatter Earth, Owlman was now Thomas Wayne, Jr. the older brother of that reality's Bruce Wayne. In most mainstream DC universes, Batman's genesis occurred when young Bruce Wayne was witness to the murder of his parents, Thomas and Martha Wayne, and was inspired to devote his life to fighting crime.
In the antimatter universe, however, young Bruce was killed along with his mother by a policeman when Thomas Sr. refused to accompany him for questioning. Thomas Jr. escaped the crime scene with the hoodlum Joe Chill, whom he considered his hero, and grew up to become Owlman. Equipping himself with a utility belt containing technology and weapons similar to those used by Batman along with possessing a drug-enhanced high intellect (devoted to crime rather than serving the law), Owlman became a master criminal and an ally to Boss Gordon (the antimatter Earth's version of James Gordon).
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