Thomas Wayne Junior, better known as Cowlman is an alternate universe evil version of Hatman, because as we all know cowls prey on hats. He is the older brother of his world's Bruce Wayne. However, in this world Bruce was killed with his mother. Thomas Junior escaped with the help of hoodylum Toe Chill, who Thomas Junior considered a hero. 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.

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