The DC Cinematic Universe is currently undergoing a massive transformation, and with every new announcement or rumor, fans are left guessing what comes next. One of the most intriguing names recently floating through the online speculation machine is none other than Sydney Sweeney. As reports swirl around potential castings and character introductions, a persistent question lingers in the minds of many: Is Sydney Sweeney playing Power Girl in the DCU?

The short answer is no — not yet. But the conversation surrounding the actress and her rumored superhero role has taken on a life of its own, especially considering how much traction Power Girl as a character has among comic book fans. The whispers have grown so loud that it’s become necessary to dig deeper into who Power Girl is, why this role matters, and whether Sydney Sweeney is the right fit for the cape.

Why Sydney Sweeney’s Name Is Dominating Fan Casting Discussions

One of the main reasons why Sydney Sweeney continues to trend alongside Power Girl in fan forums and social media is because of her massive popularity and distinctive screen presence. In just a few short years, Sweeney has proven her versatility across genres — from the emotional complexity of Euphoria to her charming screen time in Anyone But You.

Her striking appearance also plays a significant role in fueling these casting rumors. Power Girl, often depicted as a blonde, strong, confident Kryptonian, shares many visual characteristics with Sweeney. That resemblance, coupled with her growing list of critically acclaimed performances, makes her an easy candidate for fan art, mock posters, and digital edits imagining her in the iconic costume.

Still, fans should remember that resemblance alone does not confirm casting. As of September 2025, DC Studios has made no official statement linking Sydney Sweeney to Power Girl or any other DC character.

Who Is Power Girl and Why Does She Matter in the DCU?

To understand why this rumor has gained so much momentum, one must understand who Power Girl is and what she represents in the DC Universe. Originally introduced in 1976, Power Girl — also known as Kara Zor-L or Karen Starr — is a Kryptonian from an alternate Earth (Earth-Two) and a cousin to Superman, just like Supergirl in the main universe.

However, Power Girl is known for having a bolder personality. She is more assertive, direct, and at times, more pragmatic than her mainstream counterpart. This characterization, paired with her comic book origins from a multiverse that differs from the core DCU, gives writers and filmmakers a chance to explore fresh perspectives on familiar Kryptonian narratives.

While Power Girl is still considered lesser-known to mainstream movie audiences, she enjoys cult status among comic readers who appreciate her distinct identity and power set. In a cinematic world hungry for new angles and character arcs, Power Girl is a character ripe with potential — one who doesn’t have to live in Supergirl’s shadow.

Milly Alcock Is Already Flying as Supergirl

With all the buzz surrounding Sydney Sweeney, it’s essential not to overlook that Milly Alcock has already been officially cast as Supergirl in the upcoming film Supergirl: Woman of Tomorrow. Slated for release in 2026, this film represents a significant milestone for the DCU, with Alcock stepping into a role that demands emotional depth, physical presence, and the ability to lead a franchise.

Early responses to Alcock’s brief appearance in the DCU’s rebooted universe have been overwhelmingly positive. Critics and fans alike have praised her youthful energy and grounded portrayal of Kara Zor-El, suggesting she could become a staple of the cinematic universe for years to come.

This adds an important layer of complexity to the Power Girl rumor. If Supergirl already exists in the timeline, introducing Power Girl — who is technically a multiverse version of Supergirl — would require a narrative justification, such as a crossover, time travel plot, or multiverse collapse.

What Would Make Sydney Sweeney a Great Power Girl

Despite the lack of confirmation, it’s worth entertaining the question: what would make Sydney Sweeney an ideal candidate for Power Girl?

First, she has proven time and again that she can handle emotionally intense roles. In shows like The White Lotus, she balances vulnerability and strength, traits necessary for portraying a character who has lived through tragedy and isolation, yet still chooses to fight for good.

Second, her physicality is right for the role. Power Girl is often portrayed as muscular, athletic, and imposing, and Sweeney, with proper training and choreography, could believably bring that to life on the big screen.

Third, her ability to command attention in scenes without overselling emotion or falling into melodrama suggests that she could play Power Girl as the seasoned, slightly jaded hero fans expect — someone who’s seen enough of the world to have lost innocence but not hope.

The Power of Fan Casting and the Risk of Misinformation

One major reason why Sydney Sweeney keeps showing up in Power Girl rumors is the powerful momentum of fan casting. It’s a phenomenon where fans propose their ideal actor for a character and use social media to create such a convincing narrative that it feels real — even when it’s not.

While fan casting helps studios see what audiences might want, it also creates a cycle of misinformation. People begin to believe that a casting choice has been made, leading to confusion, rumors, and sometimes even backlash when reality doesn’t meet speculation.

In the case of Sydney Sweeney, the fervor surrounding her hypothetical casting has even led some media outlets to cover it as fact rather than speculation. This raises the stakes for DC Studios, who now face a decision: ignore the rumors entirely, or use the momentum to spark something real.

Is There Room for Both Supergirl and Power Girl in the DCU?

It’s worth asking whether the current DCU narrative can handle both Supergirl and Power Girl. With the multiverse theme still alive and well in comic-based cinema, especially post-The Flash and Spider-Man: No Way Home, introducing multiverse versions of existing characters is now par for the course.

Introducing Power Girl after Supergirl could offer an opportunity for richer character development. Imagine a film where Power Girl, older and more skeptical, confronts a younger, idealistic Supergirl — a contrast of personalities, beliefs, and battle experience. It could explore themes of legacy, identity, and what it truly means to be a hero in different universes.

Such a narrative would give Sydney Sweeney a distinct lane that doesn’t interfere with Milly Alcock’s Supergirl, allowing both actresses to shine in their own right.

Conclusion: Just a Rumor or the Start of Something Bigger?

For now, the idea of Sydney Sweeney as Power Girl remains firmly in the realm of fan fiction. No announcements, no leaks, and no interviews suggest anything concrete. Yet, this hasn’t stopped fans from believing, hoping, and creating content as if the deal is already done.

With Supergirl officially in flight and Power Girl still grounded, the door remains open — just slightly — for a new Kryptonian heroine to soar into the DC Cinematic Universe. Whether that heroine ends up being Sydney Sweeney is a question that only time, and studio executives, can answer.

Until then, fans will continue to imagine what might be — and perhaps that’s the real power of a good rumor.