The 30-second rundown: Reed Richards (Mr. Fantastic), Sue Storm (Invisible Woman), Johnny Storm (Human Torch), and Ben Grimm (The Thing) officially arrive in the MCU with The Fantastic Four: First Steps, before joining the Avengers starting with Avengers: Doomsday in 2026. This arrival marks the true kickoff of Phase 6, with Doctor Doom as a shared threat and a direct bridge to the X-Men.
After decades spent at another studio, Marvel's first family is finally changing universes. The Fantastic Four's arrival in the Marvel Cinematic Universe isn't a simple cameo or a wink to fans: it's a strategic move that completely reshapes the balance of the Avengers for years to come. Reed Richards and his team bring with them science that even Tony Stark never pushed this far, a direct link to the multiverse, and above all, an adversary worthy of them: Doctor Doom.
In this article, we take a look at who the Fantastic Four really are, how their arrival ties in with Avengers: Doomsday, why their integration is also linked to the arrival of the X-Men in the MCU, and what it concretely changes for the team. For a broader view of this new era, our page X-Men and Fantastic Four in the MCU perfectly complements this read.
Who Are the Fantastic Four?
Before discussing their role with the Avengers, a reminder is in order: unlike Iron Man or Captain America, the Fantastic Four aren't isolated superheroes but a real family, united by a scientific accident that transformed their DNA forever. The table below sums up who's who.
| Civilian Name | Superhero Name | Power | Role in the Team |
|---|---|---|---|
| Reed Richards | Mr. Fantastic | Total body elasticity, extraordinary intelligence | Leader and scientific mastermind |
| Susan Storm | Invisible Woman | Invisibility, force fields | Strategist and emotional anchor of the group |
| Johnny Storm | Human Torch | Combustion and flight | Fast attacker, impulsive |
| Ben Grimm | The Thing | Strength and near-indestructible rocky hide | Tank and heart of the group |
This family dynamic changes a lot compared to the classic Avengers. Sue and Reed are a couple, Johnny is Sue's younger brother, and Ben has been Reed's lifelong friend since college. This is a team bound by blood and friendship long before being bound by a mission, which stands in contrast to how the heroes originally came together — a topic covered in detail in our article How the Avengers First Met. To go further into each character individually, our complete guide to Avengers characters remains the best starting point.
How the Fantastic Four Enter the MCU
First Steps: The Film That Lays the Groundwork
The film The Fantastic Four: First Steps establishes the team in a retro-futuristic version of the 1960s, on an alternate Earth where they are already public icons long before the Avengers as we know them exist. This choice is no accident: it allows Marvel Studios to tell a complete origin story, without having to squeeze it between two scenes of an already overloaded film, all while keeping the door wide open to the multiverse.
Why They Weren't Already in the MCU
For a long time, the film rights to the Fantastic Four belonged to a rival studio, exactly like those of the X-Men. That studio's acquisition allowed Marvel to bring both franchises back into the same shared universe, almost simultaneously. It's this timing coincidence that explains why the Fantastic Four and the X-Men are arriving nearly together in Phase 6 — a parallel we cover in full in X-Men in the MCU: How Will It Work?.
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View ProductThe Fantastic Four's Role in Avengers: Doomsday
It's in Avengers: Doomsday that the Fantastic Four officially join the rest of the team. The film brings together a massive cast, but their presence is far from a footnote: Reed Richards is presented as one of the only scientific minds capable of rivaling Doctor Doom's intelligence, making him a key piece of the story rather than mere backup. For everything about this blockbuster's full cast, check out our dedicated article on the subject.
The common thread that justifies this forced alliance between the two teams is simple: a threat that neither the Avengers nor the Fantastic Four alone can face. This threat has a name — a former ally turned sworn enemy of both groups. To understand why this character is so central, our page Who Is Doctor Doom? Origin and Powers traces his entire history, while the article Doctor Doom: The MCU's New Big Bad details his exact role in this new saga.
An Alliance of Circumstance, Not a Merger
It's worth clarifying: the Fantastic Four don't become Avengers in the strict sense right from their first film. They first team up on a one-off basis to face a common danger, before their integration becomes more permanent over the course of Phase 6. This is an important difference from how other heroes, like Vision, became full-fledged members of the team — a journey you can revisit in our article on Vision, the AI Who Became an Avenger.
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View ProductFantastic Four and X-Men: The New Era of Phase 6
The Fantastic Four's arrival can't be understood in isolation. It's part of a much bigger shift redefining the entire MCU: Phase 6 of the MCU aims to merge three major forces — the historic Avengers, the Fantastic Four from an alternate Earth, and the X-Men, still expected in the coming years. This merger relies heavily on the concept of the multiverse, the only narrative tool capable of justifying characters from entirely separate continuities finally coming together in the same film.
In practice, Reed Richards becomes a kind of scientific bridge between these worlds: his expertise on parallel universes is directly tied to how these different families of heroes will eventually cross paths. Comic book fans will recognize an obvious nod here to the very origins of the character Jean Grey, whose collector's figure can also be found in our X-Men catalog.
What This Means for Fans
For the first time since the MCU launched in 2008, the Marvel Cinematic Universe is about to bring together on the same screen characters whose rights used to belong to different studios. It's a pivotal moment, comparable to what the very first Avengers film represented in 2012. To revisit this foundational moment, our page The Origins of the Avengers: How the Team Was Formed helps put the journey into perspective.
Why Their Arrival Shifts the Team's Balance
In terms of powers, the Fantastic Four bring abilities the Avengers simply never had in their ranks before. Mr. Fantastic's malleability, Sue Storm's invisibility combined with force fields, or The Thing's near-absolute physical resistance form a set of skills that complement heroes like Hulk or Thor. To precisely compare these new powers with those of the team's veteran members, our article Ranking the Most Powerful Avengers offers a full hierarchy, while the profile of Hulk and Bruce Banner's Curse helps measure the gap between raw strength and tactical intelligence.
Reed Richards, Tony Stark's Scientific Equal
Strategically speaking, Reed Richards stands out as one of the rare MCU characters capable of intellectually holding his own against Tony Stark or Doctor Strange. This intellectual rivalry promises to be one of the most interesting threads of Phase 6, especially since Reed and Doom share a common past in the comics that could well be explored on screen.
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View ProductGetting Fantastic Four Merchandise
With this MCU arrival, the range of Fantastic Four merchandise has grown considerably. Our Fantastic Four Products collection brings together all available items, from costumes to figures to collector posters.
For fans who want to dress up as a family, two other pieces are worth checking out: the Mister Fantastic armor-effect costume, faithful to the suit worn by Reed Richards on screen, and the Johnny Storm costume for fans of the team's most impulsive member. Fans of more understated posters will also love the First Steps retro poster, available from €11.64, an excellent entry point into the range without breaking the bank.
To broaden your search, several complementary collections are worth a look: Avengers figures for collectors, Avengers posters for decor, the Avengers Doomsday 2026 collection for anything related to the blockbuster film, or Avengers costumes and outfits for upcoming conventions. Fans also following the X-Men's arrival will find what they're looking for in the X-Men Products collection, and those wanting to collect it all can browse all the Avengers films to see the full timeline covered by the store.
Looking to go further while planning a gift? Our Avengers gift guide and the Avengers gift ideas collection bring together a wide selection to fit every budget, from figures to complete outfits.
Frequently Asked Questions
Are the Fantastic Four already officially Avengers?
Not strictly speaking: they first team up on a one-off basis in Avengers: Doomsday to face a shared threat, before their integration becomes more defined later in Phase 6.
Why weren't the Fantastic Four already in the MCU?
Their film rights belonged to another studio until the acquisition that brought them back to Marvel Studios, exactly like the X-Men.
What connection exists between the Fantastic Four and Doctor Doom?
In the comics as in the MCU, Reed Richards and Victor von Doom share a common past that largely explains why Doom becomes the sworn enemy of both combined teams.
Do I need to watch First Steps before Avengers: Doomsday?
It's not required, but strongly recommended in order to understand the motivations and relationships between the four characters before their alliance with the Avengers.
Will the Fantastic Four and the X-Men cross paths on screen?
That's one of the big questions of Phase 6: the multiverse serves precisely as the narrative bridge to bring together these two families of heroes from previously separate universes.
Going Further Into the Avengers Universe
A few more reads to continue exploring this new era:
- Avengers Doomsday: Everything We Know About the Film
- Phase 6 of the MCU: What's Coming
- X-Men in the MCU: How Will It Work?
- The Marvel Multiverse Explained Simply
- Avengers: Doomsday (2026) — Everything About the Film
What to Remember
With the arrival of Mr. Fantastic, Invisible Woman, Human Torch, and The Thing, the MCU crosses an unprecedented threshold: bringing together several families of heroes long kept apart by rights issues. Their gradual integration into the Avengers, kicked off in Avengers: Doomsday, paves the way for a Phase 6 designed as the grand reunion of the Marvel multiverse, X-Men included. To keep following this news and grow your collection, head to our Fantastic Four Products, Avengers Figures, and Avengers Posters departments.