Superman is a superhero created by writer Jerry Siegel and artist Joe Shuster, first appearing in issue #1 of Action Comics, published in the United States on April 18, 1938.[1] Superman has been regularly published in American comic books since then, and has been adapted to other media including radio serials, novels, films, television shows, theater, and video games. Superman is the archetypal superhero: he wears an outlandish costume, uses a codename, and fights evil and averts disasters with the aid of extraordinary abilities. Although there are earlier characters who arguably fit this definition, it was Superman who popularized the superhero genre and established its conventions. He was the best-selling superhero in American comic books up until the 1980s;[2] it is also the best-selling comic book series in the world with 600 million copies sold.[3] Superman was born Kal-El, on the fictional planet Krypton. As a baby, his parents Jor-El and Lara sent him to Earth in a small spaceship shortly before Krypton was destroyed in an apocalyptic cataclysm. His ship landed in the American countryside near the fictional town of Smallville, Kansas, where he was found and adopted by farmers Jonathan and Martha Kent, who named him Clark Kent. The Kents quickly realized he was superhuman; due to the Earth's yellow sun, all of his physical and sensory abilities are far beyond those of a human, and he is nearly impervious to harm and capable of unassisted flight. His adoptive parents having instilled him with strong morals, he chooses to use his powers to benefit humanity, and to fight crime as a vigilante. To protect his personal life, he changes into a primary-colored costume and uses the alias "Superman" when fighting crime. Clark resides in the fictional American city of Metropolis, where he works as a journalist for the Daily Planet alongside supporting characters including his love interest and fellow journalist Lois Lane, photographer Jimmy Olsen, and editor-in-chief Perry White. His enemies include Brainiac, General Zod, and archenemy Lex Luthor. Since 1939, Superman has been featured in both Action Comics and his own Superman comic. He exists within the DC Universe, where he interacts with other heroes including fellow Justice League members like Wonder Woman and Batman, and appears in various titles based on the team. Different versions of the character exist in alternative universes; the Superman from the Golden Age of comic books has been labeled as the Earth-Two version while the version appearing in Silver Age and Bronze Age comics is labeled the Earth One Superman. His persona has also inspired legacy characters such as Supergirl, Superboy and Krypto the Superdog. Superman has been adapted outside of comics. The radio series The Adventures of Superman ran from 1940 to 1951 and would feature Bud Collyer as the voice of Superman. Collyer would also voice the character in a series of animated shorts produced by Fleischer/Famous Studios and released between 1941 and 1943. Superman also appeared in film serials in 1948 and 1950, played by Kirk Alyn. Christopher Reeve would portray Superman in the 1978 film and its sequels, and define the character in cinema for generations. Superman would continue to appear in feature films, including a series starring Henry Cavill and a 2025 film starring David Corenswet. The character has also appeared in numerous television series, including Adventures of Superman, played by George Reeves, and Superman: The Animated Series, voiced by Tim Daly.