Power Girl, also known as Kara Zor-L, and Karen Starr, is a superheroine appearing in American comic books by DC Comics, making her first appearance in All Star Comics #58. Power Girl is the cousin of the superhero Superman, but from an alternate universe in the fictional multiverse in which DC Comics stories are set. Originally hailing from the world of Earth-Two, first envisioned as the home of DC's wartime heroes as published in 1940s comic books, Power Girl becomes stranded in the main universe where DC stories are set, and becomes acquainted with that world's Superman and her own counterpart, Supergirl.
Cosplay of Power Girl at the 2010 Japan Expo in Paris
All Star Comics is an American comic book series from All-American Publications, one of three companies that merged with National Periodical Publications to form the modern-day DC Comics. While the series' cover-logo trademark reads All Star Comics, its copyrighted title as indicated by postal indicia is All-Star Comics, with a hyphen. With the exception of the first two issues, All Star Comics told stories about the adventures of the Justice Society of America, the first team of superheroes. It also introduced Wonder Woman.
All Star Comics #3 (Winter 1940–1941), cover art by Everett E. Hibbard.
All Star Comics #1 (Summer 1940). Cover art is a collage of previously published panels by various artists.
All Star Comics #58 (January–February 1976), art by Mike Grell.