Supergirl ran for six seasons and 126 episodes, and it never quite solved the problem at its center: a hero who starts the story already strong. Kara Zor-El arrived on CBS on October 26, 2015, a Kryptonian raised by the Danvers family after being sent away from Krypton. She had spent years hiding what she could do. The pilot’s job was to make her stop.
Trailer, via Movie Trailer Locker.
Kara Danvers and the Danvers Family
That premise is the show’s best idea and its recurring headache. Melissa Benoist plays Kara as someone learning her own strength in public, and she carries the series. Benoist said she was excited to tell “a story about a human being really realizing their potential and their strength.” She means it. The early episodes work because Kara’s caution is a habit taught by people who loved her, not a flaw invented for drama.
Chyler Leigh’s Alex Danvers gives the show its spine. Alex is a physician, bioengineer, scientist and government agent serving as Hank Henshaw’s right hand at the DEO, and her loyalty to Kara is the relationship the series returns to when the plotting thins out.
A Move to The CW
CBS aired the first season from October 26, 2015, to April 8, 2016. The CW took over from October 10, 2016, through the finale on November 9, 2021.
| Season | Network | Run |
|---|---|---|
| 1 | CBS | October 26, 2015 – April 8, 2016 |
| 2–6 | The CW | October 10, 2016 – November 9, 2021 |
The move mattered. Season two folded the series into the Arrowverse, and season five made the link definitive. The show gained a universe and lost some of its own weather.
Lena Luthor, Brainiac-5 and Dreamer
The supporting cast is where Supergirl earns its keep. Katie McGrath’s Lena Luthor gives Kara a friendship built on a lie neither of them can name. Jesse Rath plays Querl “Brainy” Dox. Nicole Maines plays Nia Nal, Dreamer. Azie Tesfai plays Kelly Olsen, Guardian. David Harewood plays J’onn J’onzz. Staz Nair and Julie Gonzalo round out the later seasons.
Three things the show does better than its reputation suggests:
- Casting Benoist, whose performance holds through 126 episodes.
- Building Alex and Kara’s sisterhood as the emotional engine.
- Letting Nia Nal’s arc run without treating her as a special episode.
What the Politics Cost
Reviews landed positive to mixed. Critics praised the creative direction and the cast, Benoist especially. The handling of empowerment and social justice drew criticism from some viewers. That split is real, but it is not the whole story. The show’s politics were rarely subtle, and subtlety was never the point.
Supergirl won Most Exciting New Series at the 5th Critics’ Choice Television Awards in 2015. Superman & Lois was developed as a direct spin-off, with Tyler Hoechlin and Elizabeth Tulloch reprising their Arrowverse roles.
The verdict: Supergirl is a good show that spent six years arguing with itself about what a hero owes the people who raised her. The first season is the sharpest. The later ones are broader and messier. Benoist and Leigh make the whole run worth it.
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