Supergirl is a fictional character, a superhero appearing in comic books published by DC Comics and related media. The character was created by writer Otto Binder and designed by artist Al Plastino. Going by the real name Kara Zor-El, Supergirl is the biological cousin and female counterpart to DC Comic's iconic superhero Superman, created by writer Jerome Siegel and designed by artist Joseph Shuster. The Supergirl character first appeared in a story published in Action Comics #252 titled "The Supergirl from Krypton." Since the character's comic book debut, Kara Zor-El's Supergirl has been adapted into various media relating to the Superman franchise, including merchandise, t ... more on Wikipedia