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When did Superman first appear in Action Comics?

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Christopher Reeve as Superman in a blue suit with red cape and yellow belt, flying with one arm forward against a dark background in a publicity still from Superman: The Movie. — Superman Christopher Reeve in *Superman* (1978), directed by Richard Donner.

Superman first appeared in Action Comics no. 1, which was published in June 1938.12

Created by writer Jerry Siegel and artist Joe Shuster for DC Comics, the character became the first costumed superhero, establishing the archetype for those who would follow.12