A Dark MCU Theory Suggests This Controversial Avengers Moment Created Fantastic Four: First Steps’ Alternate Timeline

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This film officially introduces the Fantastic Four to the Marvel Cinematic Universe. Directed by Matt Shakman, who also directed WandaVision, it kicks off Phase 6 of the MCU – the final part of the ongoing Multiverse Saga.

As a huge cinema fan, I was immediately drawn into the world of The Fantastic Four: First Steps. It’s set in a really cool, retro-future version of the 1960s – think classic Silver Age comic books come to life! What’s interesting is that this isn’t the Marvel universe we’re used to. It’s an alternate reality where the Fantastic Four are the only superheroes, so no Avengers or anyone else to help! But, it sounds like this world might still have some links to the bigger Marvel Cinematic Universe, possibly stemming from a pretty significant and divisive event from the Infinity Saga.

Steve Rogers May Be Responsible for the Fantastic Four’s Alternate Timeline

I was completely stunned by the ending of Avengers: Endgame! Seeing Steve Rogers go back in time for one final mission was incredible – he quietly fixed things by returning all the Infinity Stones to their proper places, ensuring the timeline stayed intact. But the biggest surprise? He came back as an elderly man! It turned out he’d actually stayed in the past, in the 1940s, and finally got to live a full life with the woman he always loved, Peggy Carter. It was such a beautiful and unexpected ending for his story.

He’s stepping down and passing on his responsibilities, but hasn’t shared much about his personal life. Marvel Studios has also remained quiet about what happened to Steve Rogers after his first time travel adventure, including the details of how he was able to live in the 1940s.

Okay, so after talking with the writers, Christopher Markus and Stephen McFeely, here’s how they see Steve Rogers’ ending in Endgame. It wasn’t about creating a branched timeline, but rather that he actually lived a full life with Peggy Carter, quietly aging in the background of the MCU. That elderly man we see Sam Wilson chatting with? That’s Steve, having lived a long and happy life off-screen. It’s a surprisingly grounded take, and it reframes how we understand his sacrifice.

The filmmakers present a different idea: Steve seemingly stayed in the past, only reappearing at the end of Endgame to give Sam his shield. This has sparked debate among fans for nearly six years, with many disagreeing on which explanation is correct. Now, The Fantastic Four: First Steps might finally resolve this ongoing discussion.

Although there are different ideas about what happened, many believe Steve Rogers unintentionally created a new timeline. The Ancient One in Endgame explained that changing the past always results in a separate reality, and recent shows like Loki have followed this same idea. By traveling back in time to be with Peggy Carter, Steve likely created this alternate timeline, and we might see it again in The Fantastic Four: First Steps.

If Steve Rogers had traveled to the 1940s, his actions could have changed history, either on purpose or by accident. This could explain the very different world shown in the trailer for the new Fantastic Four movie, which takes place twenty years later. In this version of events, the Fantastic Four are the only heroes – there are no Avengers or X-Men. As Marvel’s Multiverse Saga progresses, it’s possible they’ll reveal that the altered timeline created by Steve and the one that led to this unique Fantastic Four world are actually the same.

This Fantastic Four Theory Fixes a Major Complaint About Steve Rogers’ Endgame Story

Many fans disliked the decision for Steve Rogers to travel back in time to be with Peggy Carter, feeling it was out of character for him to act so selfishly. A major concern is that by staying in the past, Steve would have known about future tragedies but done nothing to stop them. This includes letting terrible events like Bucky Barnes’s capture and the deaths of Howard and Maria Stark happen, even though he could have intervened.

Some fans believe Steve Rogers was secretly present throughout the Marvel Cinematic Universe, fitting a time travel theory called the “loop.” If Marvel were to confirm Steve created a different timeline, it could also show he worked to avoid future disasters he foresaw. This could mean Steve built a nearly perfect alternate reality, ultimately setting the stage for the events in The Fantastic Four.

Knowing what the future holds, Steve Rogers—Captain America—had the power to drastically change the world. He could have prevented personal losses, like the brainwashing of his friend Bucky, and also avoided many major global problems of the 20th century. Because of his position and his understanding of how events would unfold, he could have significantly impacted the Cold War, potentially easing tensions between the United States and the Soviet Union and even preventing conflicts like the Korean and Vietnam Wars, which historians often link to that strained relationship.

If Captain America had made different choices, the Cuban Missile Crisis and President Kennedy’s assassination might have been prevented. This could have allowed the world to prioritize advancements in science and technology, potentially leading to the emergence of brilliant minds like Reed Richards. The world Captain America created wouldn’t have needed heroes until the Fantastic Four appeared. By the time of the ‘First Steps’ event, it would be clear that his actions had created a far more peaceful and prosperous reality than the one we knew.

How Will The Fantastic Four Make It to the Sacred Timeline?

These characters currently exist in a different reality, likely the one seen in Avengers: Endgame. However, it’s expected they’ll eventually arrive in the main Marvel timeline (Earth-616) by the conclusion of the Multiverse Saga. This transition might be triggered by a major catastrophe, specifically Doctor Doom’s time-traveling actions during the Avengers: Doomsday events, which will ultimately lead to a Secret Wars storyline – an adaptation of the popular 2015 comic book arc.

In a storyline created by Jonathan Hickman, the main Marvel universe (Earth-616) crashes into another, the Ultimate Universe (Earth-1610). This collision, called an incursion, results in the destruction of the Ultimate Universe, leaving only Earth-616 intact. Some survivors from the destroyed universe, like Miles Morales, are then transported to Earth-616. The Marvel Cinematic Universe might follow a similar plot after the Secret Wars storyline.

The events of Avengers: Secret Wars could show the destruction of the universe seen in Captain America: Endgame as it merges with the main Marvel timeline. While most people from that destroyed universe would disappear when a new, central reality is created, some might survive and find themselves on a new Earth. The Fantastic Four are expected to be among those survivors, starting new lives on Earth-616 and officially joining the broader Marvel Cinematic Universe.

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2026-03-30 19:07