Kara Zor-El, also known as Supergirl, is the tritagonist of “My Adventures with Superman”.

Born into the House of El, Kara is the daughter of Zor-El, the brother of Jor-El, thereby Kal-El's paternal cousin. She was sent away by her father in the last moments before Krypton fell, the same day when Clark was sent away by his parents.

After overcoming her brainwashing from Brainiac with the help of her cousin and her new friends, Kara chose to protect her new home, becoming the heroine known as Supergirl.