Supergirl (real name Kara Zor-El) is a superheroine appearing in American comic books published by DC Comics. She was created by Otto Binder and designed by Al Plastino. Kara first appeared in the story "The Supergirl from Krypton" in Action Comics #252 (May 1959). She is the biological cousin of Kal-El, who went on to adopt the name of Clark...