Batman (originally referred to as the Bat-Man and still sometimes as the Batman) is a DC Comics fictional superhero who first appeared in Detective Comics #27 in May 1939. He has since become, along with Superman and Spider-Man, one of the world's most recognized superheroes. Batman was co-created by artist Bob Kane and writer Bill Finger, although only Kane receives official credit for the character. Batman's secret identity is Bruce Wayne, billionaire industrialist, playboy, and philanthropist. Witnessing the murder of his parents as a child leads him to train himself to the peak of physical and intellectual perfection, don a costume, and fight crime. Unlike most superheroes, he does not possess any superhuman powers or abilities; he
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Kane noted within six issues he drew the character's jaw more pronounced and lengthened the ears on the costume; "About a year later he was almost the full figure, my mature Batman," Kane said. Batman's characteristic utility belt was introduced in Detective Comics #29, followed by the batarang and the first bat-themed vehicle in issue 31, and the character's origin was revealed in issue 33. The early pulp-influenced portrayal of Batman started to soften in Detective Comics #38 in 1940 with the introduction of Robin, Batman's kid sidekick. Robin, based on Robin Hood, was introduced based on Finger's suggestion to Kane that Batman needed a "Watson" that would give Batman someone to talk to. The first issue of Batman was notable not only for introducing two of Batman's most persistent antagonists, the Joker and Catwoman, but for one of the stories in the issue where Batman shoots some monstrous giants to death, which prompted editor Whitney Ellsworth's decree that the character could no longer kill or use a gun. Batman's tone continued to stay light for the next several decades.
 The fifties and early sixties (1950-1963)
In Superman #76 (1952), Batman first teams up with Superman and learns his secret identity; following the success of this story, the separate Batman and Superman features that had been running in World's Finest Comics instead