Before we proceed, please beware: this discussion contains some spoilers ahead, so if you haven’t seen Superman yet, you might want to skip this piece. If you’ve seen the movie, or simply don’t care, you’re more than welcome to join us as we explore why Supergirl needs to be completely different from a Superman movie.
The recently released Superman (previously titled Superman: Legacy), by James Gunn, has taken the world by storm, as it continues its screenings worldwide. This new film introduces the audience to the brand-new era of the DC Universe, which deliberately reimagines Krypton’s legacy (hence the original title), and the heroes who survived its destruction. The new Superman, perhaps the most comic-accurate of them all, is everything we’ve come to expect from the Man of Steel. He’s kind, compassionate, and was raised by Kents to have an unwavering moral compass.
However, we’re not here to discuss the hopeful tone of Superman’s story, but the striking cameo that takes place near the end of the film’s 130-minute runtime. Yes, we’re here to discuss the appearance of Kara Zor-El, aka Supergirl, portrayed by Milly Alcock of Upright and House of the Dragon. Her version of the character establishes Kara Zor-El as a very different kind of Kryptonian, which will undoubtedly demand an entirely different approach to her own story in the upcoming Supergirl, scheduled to release in 2026.

During her brief appearance at the end of Superman, Kara Zor-El basically crash-lands into the Fortress of Solitude, visibly drunk. It’s clear, right from the start, that this isn’t the innocent, sweet, and often well-behaved Kara that most of us know. Instead, she stumbles around, swears, and even calls Superman, her cousin, a bi*ch, while sarcastically thanking him for taking care of her dog Krypto while she was out “adventuring”. This explains the foster situation Superman alluded to earlier in the movie.
Whatever the case may be, this clearly isn’t the polished hero we’ve come to expect from her previous iterations, such as Melissa Benoist’s optimistic portrayal in CW’s Supergirl, or Helen Slater’s less super version. This seems to be an angry teenager with plenty of emotional baggage that she’s trying to drown in unhealthy behavior. So, what gives, and how did we end up with such a different version of a beloved character? Well, our first clue lies in the title of the upcoming Supergirl movie.

While Superman was originally supposed to be Superman: Legacy, the original title of the upcoming Supergirl film was Supergirl: Woman of Tomorrow. While this may not sound like much, comic book fans can recognize the connection with the Woman of Tomorrow comic, an eight-issue limited series by Bilquis Everly and Tom King from 2021. This comic book series is actually being adapted into the upcoming 2026 film.
Unlike typical portrayals of Kara in the comics, which ranged from cheerful and optimistic to more rebellious and headstrong, the Woman of Tomorrow version of the character is far more hardened and emotionally scarred by her experiences. Namely, the Woman of Tomorrow comic book series portrays Kara as a wandering hero traveling from one red-sunned planet to another. The exposure to red suns strips Kara of her superhuman powers, and allows her to inebriate herself to dull her pain of seeing Krypton destroyed.

One of the key differences between Superman and Supergirl is that she remembers their home world, because she was actually born before Kal-El, whom we also know as Clark Kent, or Superman. She was actually a teenager when Krypton was destroyed. While Kal was sent away as a baby, she survived the destruction of Krypton thanks to her father, who built a protective shield around their hometown of Argo City. Sadly, that shielding was destroyed by a meteor swarm, which is why Kara’s parents, Zor-El and Allura, decided to send their 15-year-old daughter to Earth.
Regardless of the continuity, she arrives on Earth much later than Kal-El, and thanks to the power of suspended animation, she’s still basically a teenager when she arrives, even though her baby cousin is now an adult. So, not only does Kara remember Krypton’s destruction, she also had to watch everyone around her wither and perish in some horrible way, which is the source of her trauma, and Woman of Tomorrow is basically about Supergirl dealing with her trauma in a much different way than most superheroes.

So, while Clark arrived on Earth as a baby and had never experienced Krypton’s downfall first hand, Kara’s experience was quite different. By the time she reaches Earth, she is no longer a hopeful child in need of guidance but a young woman scarred by unimaginable loss. This is what shapes the personality we witnessed at the end of Superman. This is why her solo movie, the upcoming Supergirl, can’t rely on the same formula Gunn used for Superman’s story. And the backdrop we were introduced to allows the upcoming narrative to be different.
Instead of providing us with a gender-swapped version of Superman, Gunn now has the opportunity to explore themes that Superman rarely does. These could include the gray areas of justice, the damaging effects of anger and blind fury, and the challenge of retaining one’s kind heart after they have witnessed so much suffering. And in order to tell that story right, Supergirl needs to be fundamentally different from the recently released Superman.
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