Power Girl is the Earth 2 counterpart to Supergirl. She was first introduced in 1976 as a second generation member of the Justice Society of America, the Golden Age superhero team which originated during World War II. The JSA were reintroduced in the 1960s as living on a parallel world so their stories could continue being told independently of the “main” DC universe. Power Girl’s closest friend on Earth 2 was Huntress, daughter of Batman and Catwoman.
A refugee from Earth 2 and cousin to the Golden Age Superman, Kara Zor-L is gifted with the standard array of Kryptonian super powers. She was introduced in 1976 in ALL-STAR COMICS #58 as Earth 2’s counterpart to Supergirl. While the world knows her as Karen Starr, CEO of Starrware Industries, her enemies know her as POWER GIRL!