The Marvel Cinematic Universe has never been short on surprises, but its next phase appears poised to test audiences' imaginations in entirely new ways. As timelines collide and multiversal chaos deepens, every casting move, cameo tease, and cryptic hint is being dissected online. Against this backdrop, a new speculation has taken over social media feeds.

Could two of Marvel’s most unconventional heroes finally share the screen in an unexpected face-off? The buzz centres on whether Mr. Fantastic could cross paths with the ever-unpredictable Deadpool in Avengers: Doomsday, and what that might mean for the MCU’s evolving narrative.

The speculation about Pedro Pascal’s Mr. Fantastic going up against Ryan Reynolds’ Deadpool stems from a post by an X user named Alex P. The user’s bio mentions that he is a writer at The Cosmic Circle, a pop culture website covering movies, TV shows, comics, and more.

Retweeting a list of rumored fight sequences in Avengers: Doomsday shared by Filmify, which included a Mr. Fantastic vs Nightcrawler showdown, Alex wrote that Mr. Fantastic was definitely going up against the wrong mutant. That comment was interpreted by many online as a hint toward a potential Deadpool vs Mr. Fantastic face-off.

As the speculation continues, it is essential to note that Deadpool’s appearance in Avengers: Doomsday has not been confirmed. While Pedro Pascal’s part as Mr. Fantastic was confirmed long ago, Ryan Reynolds’ character remains tentative for the Robert Downey Jr.-led film. That said, Marvel is known for surprise appearances that are often revealed once the viewers are firmly in the theaters.

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A different Avengers: Doomsday speculation, however, focused on Chris Evans, was recently confirmed with the release of the film’s latest teaser

MCU aficionados were certain for months about Chris Evans’ return to Avengers: Doomsday, and Marvel confirmed the same with a teaser shared on social media and debuted in theaters alongside Avatar: Fire and Ash recently. The teaser shows Steve Rogers living a quieter life alongside a baby, whose identity is yet to be revealed.

As Avengers: Doomsday edges closer, Marvel’s carefully controlled reveals continue to blur the line between confirmation and conjecture. With legacy characters re-entering the fold and multiversal stakes growing higher, speculation has become part of the viewing experience itself. Whether Mr. Fantastic ever faces Deadpool or not, the conversation reflects a larger truth about the MCU’s current phase: Anticipation now lives as much online as it will on the big screen, waiting for the moment Marvel finally plays its hand.

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Do you want to see a Mr. Fantastic and Deadpool showdown in Avengers: Doomsday? Let us know in the comments.