Avengers fans have been buzzing after the first official trailer for Avengers: Doomsday dropped on July 20, 2026. The upcoming film, set for release this December, promises to bring together Earth's mightiest heroes, including the Avengers, Thunderbolts, X-Men, and Fantastic Four, to thwart the villainous Doctor Doom, played once again by Robert Downey Jr. However, the biggest talking point among fans has been the return of Chris Evans as Steve Rogers, aka Captain America—but not for the reasons one might expect.
Fans Question Chris Evans' Appearance
Many viewers took to social media to express confusion over Evans' physical appearance in the trailer. User @Goldxn_Violin wrote on X, 'Maybe this is pedantic, but that’s not him. That doesn’t look like him. That looks like Chris Evans.' Another fan, @hanithology, asked, 'I’m sorry, did Chris Evans just have his first glowdown?' @RestlessEmRose added, 'Wtf is this 😑 that’s not my Steve! This literally just looks like Chris Evans! I actually hate this so much.'
The most notable change is Steve Rogers' new hairstyle: a mullet, described by fans as 'avenging up front, party in the back.' This grungier look has led to widespread speculation that this version of Steve Rogers is not the one fans know and love.
Fan Theory: Hydra Cap Has Returned
According to a popular fan theory circulating online, the Steve Rogers seen in the trailer is actually an evil variant from a dark corner of the multiverse. Dubbed 'Stevil' or 'Hydra Cap,' this version of the character is believed to have been brought to the main dimension by Doctor Doom to aid in his nefarious plans.
User @Sksj002 laid out the theory on X: 'Long-haired Steve Rogers isn’t our Steve; he’s Hydra Cap. Hydra could be working with Doom. Thor looks genuinely shocked when Steve appears… If true, that would be one of the biggest MCU WTF moments.' @comicsexplained agreed, stating, 'That is definitely Hydra Cap.' @HarleyQuinn720 added, 'Maybe I’m crazy…ok no I am, but I don’t think that’s a good Cap. I think that’s Hydra Cap infiltratin’ the hero’s teams n’ winnin’ trust all for Doom.'
The Mjolnir Problem
One major obstacle to the theory is the moment in the trailer where Steve Rogers lifts Thor's hammer, Mjolnir. In the Marvel Cinematic Universe, only those deemed worthy can lift the hammer. However, comic book lore provides a potential explanation. In the 2017 storyline Secret Empire, where Hydra Cap was introduced, magical manipulation changed the enchantment on Mjolnir, allowing the evil version to lift it despite his villainous nature. As user @AllGritDiesel tweeted, 'Evil cap re-wrote the enchantment. It could be Hydra Cap.'
This detail has bolstered the theory among fans, suggesting that the filmmakers may be drawing directly from the comics.
What to Expect from Avengers: Doomsday
The trailer, released on July 20, 2026, shows Thor looking genuinely shocked when Steve appears, further fueling speculation that this is not the Steve Rogers he knows. The film is set to be a multiversal epic, with Doctor Doom as the central antagonist. Whether the long-haired Steve is indeed Hydra Cap or simply a new look for the character remains to be seen.
Avengers: Doomsday is scheduled to hit theaters on December 18, 2026. Fans will have to wait until then to discover the truth behind Steve Rogers' transformation.
