The Fantastic Four are back with a movie set to hit cinemas in 2025 but on top of its already star-studded cast, it seems another big name will be making a cameo.

The Fantastic Four: First Steps is an upcoming MCU film which is, of course, based on the much-loved Marvel team.

This time it will star big names such as Vanessa Kirby as Susan Storm, Joseph Quinn as Johnny Storm, Pedro Pascal as Mister Fantastic, and Ebon Moss-Bachrach as Ben Grimm.

With Kirby best known for The Crown, Quinn for Stranger Things, Pascal for Game of Thrones and The Last of Us, and Moss-Bachrach for The Bear, it is safe to say that Marvel has already struck big with this brand-new cast.

However, according to a recent sighting, there could be another famous face making an appearance in the 2025 film.

Captured by miibad7, a mysterious actor was recently spotted on the set of The Fantastic Four: First Steps.

Seen rushing inside with a coat thrown over their head and security sprinting alongside them, the hidden figure was spotted in Oviedo, Spain ready for filming.

With the crew adamant to keep their identity a secret, that hasn’t stopped eagle-eyed fans from guessing who it could be.

“My guess would be Chris Evans or whoever is expected to play Norrin Radd,” the top guess read.

Another said: “Everyone’s saying RDJ, but I have never seen RDJ in tight jeans.”

Like I said, eagle-eyed.

The general consensus seems to be that this is indeed Chris Evans who, as well as taking on the role of Captain America over the past decade, also starred as the Human Torch in 2005’s Fantastic Four.

Could he also have a role in the new Fantastic Four franchise?

It remains to be seen when The Fantastic Four: FIrst Steps hits cinemas on 25 July, 2025.