Fantastic Four Confirmed for Major Role in Avengers: Doomsday

Marvel Studios is finally uniting its legendary teams—and it’s not just the Avengers in the spotlight this time. In a move that’s electrified fan anticipation, The Fantastic Four have been officially confirmed to play “key roles” in Avengers: Doomsday. This signals more than just a crossover—it suggests that Marvel’s First Family will be front and center in the MCU’s next multiversal war.

With The Fantastic Four: First Steps hitting theaters July 25, just months before Doomsday, the timeline is lining up for something epic.

Marvel’s Confirmation: The Fantastic Four Are In

In a recent press release celebrating the record-breaking livestream for the Avengers: Doomsday cast reveal, Marvel Studios slipped in a game-changing confirmation:

“Cast members from Marvel Studios’ next two films — Thunderbolts, which kicks off the summer May 2, and The Fantastic Four: First Steps on July 25 — will play key roles in Avengers: Doomsday.”

This isn’t a vague tease. It’s a statement of intent. The Fantastic Four won’t just cameo—they’re core players in the next Avengers saga. And given the team’s origin outside the Sacred Timeline, their presence hints at far bigger multiversal consequences ahead.

First Steps: A 1960s Universe, A Multiversal Exit

First Steps is set in the early 1960s, but not in Earth-616. It’s a retro-futuristic, alternate-universe origin story where Reed Richards’ brilliance has already shaped society. But this vintage Earth may not stay safe for long.

The teaser trailer already hints at something catastrophic—likely Galactus-level catastrophic. Reed, ever the explorer, seems to have discovered a way to break through the Multiverse, possibly as an escape from his dying world. If so, Avengers: Doomsday may see the Four arrive in Earth-616 seeking refuge and reinforcements.

And who better to offer both than the Avengers?

Why the Avengers Need the Fantastic Four
Doomsday won’t be a typical team-up film. With Robert Downey Jr.’s Doctor Doom now confirmed to be the central villain, the stakes are sky-high—and personal.

It’s likely that Doom’s origin, like the Fantastic Four’s, is also Multiversal. Perhaps he is a survivor of the same collapsing world, or worse, its destroyer. Reed Richards and Doom have a rivalry spanning realities, and this MCU iteration could lean into that history on a much grander scale.

In fact, Reed’s intellect, Sue’s precision, Johnny’s power, and Ben’s raw strength may be exactly what Sam Wilson’s Avengers need to stand a chance. Especially with Doom potentially harnessing forbidden tech, dark variants, or remnants of Kang’s empire.

Franklin Richards: The Ultimate MCU Wildcard?

Another huge possibility? The inclusion of Franklin Richards, the omniversal son of Reed and Sue. If Marvel Studios is ready to bring Franklin into the mix—even as a teen or young adult—Doomsday could end up unlocking god-tier cosmic battles, potentially setting the stage for Secret Wars in May 2027.

Franklin’s powers, which rival Celestials and Beyonders in the comics, would make him a prime target—or ally—in the fight for multiversal control. And if Doctor Doom is after that power, the entire MCU might hang in the balance.