Kevin Feige's Marvel Studios Replaces Multiple MCU Actors Before of 'Avengers' Reset

The Marvel Cinematic Universe is heading toward a massive transformation—one that will reshape the next era of storytelling.

The Avengers Overhaul at Marvel Studios

The MCU is recalibrating after a major shake-up. Avengers: The Kang Dynasty, once slated as the next Avengers blockbuster, was pulled after Jonathan Majors’ conviction and his departure from the role of Kang the Conqueror.

Marvel quickly restructured its plans, setting up Avengers: Doomsday (2025) as the new cornerstone of the Multiverse Saga. Robert Downey Jr. is returning, though not as Iron Man. Instead, he’ll debut as Victor Doom, placing the actor at the center of a striking new chapter for the franchise.

Directors Joe and Anthony Russo are also back, reuniting with Marvel after delivering Avengers: Infinity War (2018) and Avengers: Endgame (2019). Their involvement signals that Doomsday and its sequel will bring the same level of universe-shifting spectacle as their earlier films.

The timing has shifted, though. Avengers: Doomsday now opens on December 18, 2026, followed by Avengers: Secret Wars on December 17, 2027—each pushed back by seven months.

These delays fit Marvel’s renewed “quality over quantity” focus as the studio seeks to steady its footing after the uneven reception of Phases Four and Five. Reports indicate the Doomsday script is still being finalized, making the new release window a strategic pause.

When the film does arrive, the scope will be unprecedented. The Fantastic Four, the Thunderbolts, and legacy X-Men actors are all confirmed to appear, setting the stage for one of the largest ensemble casts in comic book movie history.

The Russos have teased that Doomsday won’t just close out a storyline but instead launch the MCU into a brand-new direction. Marvel Studios President Kevin Feige echoed that idea while discussing the next steps for the franchise, particularly its long-awaited X-Men saga.

Hesitant to call it a reboot, Feige clarified to Variety: “Reboot is a scary word. Reboot can mean a lot of things to a lot of people. Reset, singular timeline–we’re thinking along those lines […] X-Men is where that will happen next.”

Before Doomsday, only one film is set to hit theaters: Destin Daniel Cretton’s Spider-Man: Brand New Day, releasing July 31, 2026. On Disney+, however, Marvel content continues with Ryan Coogler’s Eyes of Wakanda, followed by Marvel Zombies.

Marvel Zombies Brings a Darker Edge

Part of Phase Six, Marvel Zombies expands the What If…? alternate-universe tale with a darker TV-MA take, marking Marvel Animation’s boldest swing yet. Originally conceived as a feature film, the project is now a four-episode limited series with Zeb Wells as creator and Bryan Andrews as showrunner and director. Stellar Creative Lab continues to lead animation duties.

The series diverges from Robert Kirkman’s comic books, imagining a survival-driven reality where Earth’s heroes—like Captain America, Scarlet Witch, and Thanos—become terrifying undead threats.

Returning voice actors include Iman Vellani (Kamala Khan), Simu Liu (Shang-Chi), Florence Pugh (Yelena Belova), Hailee Steinfeld (Kate Bishop), David Harbour (Red Guardian), Dominique Thorne (Ironheart), and Elizabeth Olsen (Wanda Maximoff). Randall Park and Awkwafina also join the ensemble.

Opposing them will be zombified versions of Captain Marvel, Ikaris, Ghost, Abomination, and more. But not every role will feature its live-action actor.

Todd Phillips replaces Mahershala Ali as Blade Knight, while Hudson Thames once again takes over as Peter Parker/Spider-Man. Kenna Ramsey reportedly continues her role as Okoye, replacing Danai Gurira, as she did in What If…? Season 3.

Though unconfirmed, Alexandra Daniels is expected to reprise Captain Marvel, while Josh Keaton is likely to voice Steve Rogers. All four episodes debut on Disney+ on September 24, 2025.

Marvel’s Reset in Motion

The changes don’t end with animation. Avengers: Doomsday is designed to alter the trajectory of the MCU itself. Borrowing the narrative scale of Infinity War and Endgame, Doomsday will center its story around Robert Downey Jr.’s Victor Doom—mirroring how Thanos anchored Infinity War.

Reports indicate the movie will revisit Steve Rogers’ poignant Endgame finale with Peggy Carter, hinting that emotional callbacks will be just as vital as spectacle. On-set details even suggest a recreation of Rogers and Carter’s home, tying Doomsday directly to one of the MCU’s most defining moments.

The cast is massive, ranging from Sebastian Stan, Simu Liu, Florence Pugh, and Chris Hemsworth to X-Men veterans Ian McKellen, Patrick Stewart, and Rebecca Romijn. Other additions include Pedro Pascal as Reed Richards and Vanessa Kirby as Sue Storm from The Fantastic Four: First Steps (2025).

Recent reports added more than 30 names, including Mark Ruffalo, Brie Larson, Jeremy Renner, Karen Gillan, and Yahya Abdul-Mateen II.

With a cast this extensive and storylines designed to reshape the entire franchise, Avengers: Doomsday is shaping up as Marvel’s boldest experiment yet.

How do you feel about the recasting and potential recasting of multiple MCU actors? Let us know in the comments down below!