Guardian are DC Comics superheroes introduced in April 1942 by writer/artist Joe Simon and artist Jack Kirby.

Supergirl is an American superhero drama television series developed by Ali Adler, Greg Berlanti and Andrew Kreisberg that aired on CBS and later The CW from October 26, 2015, to November 9, 2021. It is based on the DC Comics character of the same name created by Otto Binder and Al Plastino. The series features Melissa Benoist in the title role. Supergirl is a costumed superheroine who is Superman's cousin and one of the last surviving Kryptonians from the planet Krypton. Starting with its second season, the show was retroactively established to be set in the Arrowverse, sharing continuity with the other television series of the franchise.