Power Girl, also known as Kara Zor-L, Karen Starr, is a superheroine appearing in American comic books by DC Comics, making her first appearance in All Star Comics #58 (January/February 1976). Though they are biologically the same person, Power Girl behaves as an older, more mature, and more level-headed version of Supergirl, with a more aggressive fighting style. Believes in justice no matter the cost has no mercy or sympathy for criminals.