Supergirl is a fictional superhero character in the DC Comics universe. She is the cousin of Superman (Clark Kent) and shares similar superhuman abilities, including super strength, flight, heat vision, and invulnerability, due to the Earth's yellow sun. Supergirl's civilian identity is Kara Zor-El, and she was originally portrayed as a teenager from the planet Krypton who survived its destruction and arrived on Earth, where she adopted the superhero person of Supergirl to protect humanity. Over the years, Supergirl has been depicted in various comic book series, animated TV shows, and live-action adaptations, including her own television series. The character has become an iconic figure in the world of superheroes, inspiring many fans with her courage and dedication to justice.