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Supergirl: History & Fun Facts

Action Comics #252 and the Last Daughter of Krypton

Supergirl arrived in Action Comics #252 in May 1959, created by writer Otto Binder and artist Al Plastino. The story was elegant: a rocket landed in the woods near Metropolis carrying a teenage girl in a costume identical to Superman's. She turned out to be Kara Zor-El, Superman's older cousin from Argo City, a fragment of Krypton that had survived the planet's destruction by sealing itself under a protective dome. When the dome eventually failed, Kara's parents sent her to Earth in a separate rocket. Time dilation meant she arrived as a teen while her younger cousin Kal-El had already grown into Superman. The setup gave DC a younger, more relatable Kryptonian for a new audience.

Secret Origins and the Linda Lee Identity

For her first appearances, Supergirl operated in secret. Superman placed her in Midvale Orphanage under the cover name Linda Lee, where she trained her powers and learned to control them out of public view. She made her first public appearance in Action Comics #285 in 1962, after which she became a regular member of the DC Universe. The hidden-training-period idea was unusual for a 1959 hero, and it gave her storylines a coming-of-age quality that Superman's straightforward farm-boy origin did not. By the late 1960s she had her own title and her own supporting cast.

Death and Return

Supergirl was killed off in 1985 during the company-wide reboot event Crisis on Infinite Earths. Marv Wolfman and George Pérez's storyline ended with Kara sacrificing herself to save Superman from the Anti-Monitor, and her death was treated as permanent for nearly twenty years. The 1986 Man of Steel reboot retconned her out of continuity entirely, and the version that returned in 1996 was a different character with a different origin. The original Kara Zor-El was finally restored to canon in 2004 by writer Jeph Loeb in the Superman/Batman comic, and she has remained an active part of the DC Universe ever since.

The CW Series and Modern Era

The 2015 television series Supergirl, starring Melissa Benoist, ran for six seasons across CBS and the CW and became one of the most successful female-led superhero shows ever made. The series introduced an entire generation of viewers to Kara as a fully realized character with her own villains, supporting cast, and ongoing storylines distinct from her cousin's. The success of the show coincided with the 2020s push to give Supergirl her own theatrical film, with Milly Alcock cast in the role for the 2026 Superman cinematic universe restart.

Why Supergirl Endures

Supergirl's appeal across six and a half decades comes from the same place as her cousin's, but with a key difference: she remembers Krypton. Superman was an infant when his planet died; Kara was a teenager. That memory of a lost home gives her stories an emotional weight Superman's tend to lack. Combined with the same Kryptonian power set, the result is a hero who is just as powerful as her cousin but more vulnerable to grief, doubt, and the pressure of being one of the last members of an extinct civilization. Six decades after Action Comics #252, Kara Zor-El remains the only top-tier DC hero whose origin centers not on gaining powers but on surviving the complete destruction of her world — a distinction that gives her stories an emotional weight no other character in the lineup shares.