Milly Alcock’s Supergirl trailer sparks comparisons to another blockbuster franchise

Milly Alcock is trending after the latest trailer for Supergirl sparked a wave of online reaction, with many viewers pointing out the same unexpected similarity.

The new footage offers a closer look at Alcock’s version of Kara Zor-El, but much of the conversation has quickly shifted elsewhere.

Fans notice one thing

Shortly after the trailer dropped, social media filled with similar reactions, with many comparing the film’s tone and visuals to Marvel’s Guardians of the Galaxy.

From the music choices to the colourful space setting and character styling, viewers have highlighted what they see as familiar elements, with one viral post describing it as “Guardians of the Galaxy 3.5”.

James Gunn Supergirl is just Temu Guardians of the Galaxy. pic.twitter.com/FprBBCHZ6R

— Jon Del Arroz | Pop Culture & Gaming 🎮 (@jondelarroz) March 30, 2026

It just looks like a Guardians of the Galaxy spin-off. Doesn’t look or feel like Supergirl at all.

I’m so tired of Sisterhood of the Traveling Superhero Cape journeys of self-discovery. Get your sloppy ass together.

I’m done. Kick Gunn out. Clearly the wrong guy. https://t.co/TDVhzYWK9C pic.twitter.com/YGuDH446nt

— John A. Douglas (@J0hnADouglas) March 31, 2026

Others pointed to specific moments involving Supergirl and her dog Krypto, saying the emotional beats felt similar to recent superhero storylines.

Debate builds around the film

The trailer suggests a story centred on Kara embarking on a high-stakes journey after Krypto is poisoned, blending action, revenge and space adventure.

While some fans have questioned the film’s originality, others have defended it, noting that the story is based on the Supergirl: Woman of Tomorrow comics, which predate some of the comparisons being made.

As the discussion grows, Alcock’s take on Supergirl has quickly become a talking point, with reactions continuing to divide viewers online.