The Superman Problem, But Harder
Let’s be honest: adapting Kryptonians is tough. For decades, writers have wrestled with the “Superman Problem”—a character so powerful that creating genuine stakes feels like a chore. The result is often a repetitive cycle of Kryptonite, magic, or villains
who are simply bigger, stronger clones of the hero. With Supergirl, the problem is often compounded. She has all of Superman’s powers but frequently less of his established narrative infrastructure or cultural weight. Past adaptations, from the well-meaning but inconsistent CW series to her brief, brutal appearance in *The Flash*, have struggled to give her a definitive story that isn't just a reaction to her cousin's. Without carefully imposed limits, her stories can drift into a sea of overwhelming power where nothing truly matters. She can reverse time, punch through planets, and move faster than light. When a character can do anything, the question of what she *should* do becomes dramatically inert.
The Blueprint from 'Woman of Tomorrow'
Thankfully, the new DCU has the perfect cheat sheet: Tom King and Bilquis Evely’s comic series *Supergirl: Woman of Tomorrow*. The book, which James Gunn has confirmed is the film’s primary inspiration, masterfully solves the power problem without ever taking her powers away. It strands Kara on a backwater planet with a young, vengeance-seeking alien, on a quest that cannot be solved with heat vision or super-strength. The story is a gritty, sci-fi western where her physical invulnerability is almost incidental. She faces poisons she can’t metabolize, dilemmas with no right answer, and cruelty she can’t just punch away. The book’s genius is in understanding that true limitations are situational and emotional, not just physical. By placing her in a world where her strength is the least interesting thing about her, the comic forces her to rely on her wits, her empathy, and a deep, weary resilience. This isn't a story about what Supergirl *can* do; it’s a story about what she *endures*.
Discipline for the Writer, and the Character
The headline’s call for “discipline” is a two-way street. First, it applies to the filmmakers. They must have the discipline to resist the easy outs. No suddenly-discovered new powers to solve a third-act problem. No villains whose only trait is being strong enough to trade blows with a Kryptonian. The discipline is in committing to the story’s constraints. If Supergirl is on a quest where the goal is justice, not just victory, then the writers must honor that. The tension must come from the gap between her power and the complexity of the problem. Second, and more importantly, it applies to Kara Zor-El herself. Gunn described his vision for this Supergirl as someone who “was raised on a rock, a chip off of Krypton, and watched everyone around her die and be killed.” This is a hero forged in trauma, a survivor with unimaginable power and, presumably, unimaginable rage. The core of her character arc should be her own internal struggle for discipline. How does someone who has lost everything, and who could level a city in a fit of grief, choose to be a hero? Her greatest battles shouldn't be against alien warlords, but against her own despair and the temptation to use her godlike power to impose her will.
Beyond Kryptonite and Red Suns
For too long, the only limits offered for Kryptonians have been external and artificial: a glowing rock, a red star, a magical foe. These are narrative shortcuts, not meaningful challenges. The next Supergirl film has a chance to redefine what a “limitation” really is. The true test of her character isn’t whether she can survive a blast of Kryptonite radiation, but whether she can keep her faith in others after being betrayed. It’s whether she can show mercy to an enemy who reminds her of the monsters who destroyed her home. It’s choosing to save one person when she knows she can’t save everyone. These are the kinds of limitations that build character, not just plot. They turn a flying brick into a compelling, complex figure who earns her 'super' moniker not through strength, but through the discipline of her choices.
