A new MCU idea offers a clever explanation of how Marvel’s First Family will get to Earth-616 in The Fantastic Four: First Steps. The Fantastic Four: First Steps, the first live-action MCU film to be fully set in an alternate reality, is slated for release on July 25, 2025, as part of Phase 6. This will clarify why the Fantastic Four haven’t appeared yet, but they are still anticipated to become part of the MCU’s primary continuity in First Steps, which will enable their eventual reappearance. In The Fantastic Four: First Steps, Reed Richards (played by Pedro Pascal), Sue Storm (played by Vanessa Kirby), Johnny Storm (played by Joseph Quinn), and Ben Grimm (Ebon Moss-Bachrach) are anticipated to face up against the Silver Surfer and planet-eater Galactus. The Fantastic Four’s guaranteed reappearance in Avengers: Doomsday suggests they will find a way to live, despite speculation that this may result in the end of their universe. According to a recent MCU hypothesis, the Fantastic Four may replicate the Avengers’ 2019 Endgame ploy, which would provide them the ideal means of getting to Earth-616.
A teaser image of the Fantastic Four’s upcoming Marvel Legends action figures was revealed by Hasbro in honor of April 4. Although it doesn’t feature the team’s complete attire, it does feature an intriguing new detail. Metallic bands that were previously unseen on the wrists of Mister Fantastic and the Invisible Woman adorn the Fantastic Four’s outfits in Hasbro’s picture. Upon closer examination, it becomes unclear what these wristbands are when one sees a glimpse of them on the team’s wrists in the first teaser for The Fantastic Four: First Steps.
Versions of these wristbands may have already appeared in the MCU and other Marvel franchise films, according to a recent theory posted on The Direct. In particular, they could be a reference to the time travel wristbands that Tony Stark created for the Avengers in Avengers: Endgame so that they could carry out the Time Heist. As an alternative, these wristbands may have been employed to stabilize multiversal travelers in a different world, which is why they might have been shown in Sony’s Spider-Verse series. This could be crucial to the plot of The Fantastic Four: First Steps.
The Fantastic Four team’s ability to switch between realities might be explained by their possession of technology like to Tony Stark’s time travel bracelets. In Endgame, the Avengers utilized these bracelets to switch between many realities. They first traveled back in time to 2012, 2013, and 2014, but they were also used to return to the original continuity of the Avengers after branching timelines. This implies that the next First Family series from Marvel will be able to go to Earth-616 from their parallel reality with comparable technology. The fact that the crew has previously visited many universes might be explained if these bracelets end up looking a lot like the Dimensional Travel Watches from the animated Spider-Verse series. This may lend credence to the idea that the Fantastic Four are from Earth-616 and were stranded in a parallel dimension following a botched experiment in the 1960s. In The Fantastic Four: First Steps, they will be battling to return home, and upon returning to the main universe of the MCU, they may run into some old acquaintances.
Other MCU heroes will not make cameo cameos in The Fantastic Four: First Steps, according to director Matt Shakman’s recent announcement. The Fantastic Four will receive all of the attention as a result, but the team’s first film may come off as isolated from the larger MCU universe. A great approach to modify this would be to provide the team with technology akin to that created by Tony Stark in Avengers: Endgame, especially as this would put a lot of strain on Stark’s and Reed Richards’ genius-level intelligence.

Source: Screen Rant