She is Kara Jor - El , daughter of Jor - El , cousin of Supergirl , and the primary protector of Metropolis .
In the Ame - Comi line , Power Girl is that universe 's equivalent of Superman .
Power Girl is Kara Jor - El , daughter of Jor - El , cousin of Supergirl , and the primary protector of Metropolis .
In the Ame - Comi line , Power Girl is that universe 's equivalent of Superman .