Marvel Studios Reportedly Replaces Key Director on Avengers: Doomsday Over Dissatisfaction

Marvel Studios’ Avengers: Doomsday just hit a major speed bump as new reports confirm the removal of a key crew member from the production.

According to trusted insider Daniel Richtman, Marvel Studios has replaced second unit director Rob Alonzo, reportedly due to dissatisfaction with his work. The decision comes during an active production schedule in London, as Doomsday gears up to become the next monumental entry in the MCU, directed by Joe and Anthony Russo, the duo behind Infinity War and Endgame.

While Marvel has not publicly commented on the change, insiders suggest that James Young — renowned for his work as fight coordinator on Captain America: The Winter Soldier — may be stepping in to take over second unit direction, particularly in managing fight choreography and action-heavy sequences.

Who Was Rob Alonzo & What Happened?

Rob Alonzo is a respected stunt and second unit director, having previously worked on projects like Deadpool, The Batman, and The Flash. In Avengers: Doomsday, Alonzo was likely overseeing critical stunt and action sequences that didn’t involve the main cast — a crucial role in a high-budget ensemble film.

According to Richtman, Marvel was “dissatisfied with his work,” leading to his dismissal during production. Although no further details were disclosed, the decision highlights the high-stakes nature of the film and Marvel’s unwillingness to compromise when it comes to execution.

Is Avengers: Doomsday in Trouble?

The news adds to a growing pile of behind-the-scenes concerns about the MCU’s next flagship project.

🚩 Delays & Creative Uncertainty

Avengers: Doomsday was already delayed from May to December 18, 2026, signaling either a need for more time or internal complications. Adding to the tension, rumors persist that the film’s third act is not finalized, with the script reportedly evolving during filming.

⚡ Massive Expectations

The pressure on Doomsday is immense. Following a string of uneven Phase 5 releases, Marvel needs Doomsday to be more than just a success — it needs to reignite fan excitement, reassert creative leadership, and solidify Phase 6’s narrative momentum.

The film is expected to unite legacy MCU characters like Captain America, Doctor Strange, and Spider-Man with newcomers like the Fantastic Four, the Thunderbolts, and Doctor Doom (played by a variant of Robert Downey Jr.’s Tony Stark — a multiversal twist that has fans buzzing).

What Happens Next?

While a director change is not uncommon in large-scale blockbusters, especially for second unit work, it does raise concerns about consistency, vision, and quality control — especially in a film with such high narrative complexity and emotional stakes.

The Russo brothers’ return may reassure some fans, given their proven success with Infinity War and Endgame. Still, many will be watching closely for any further signs of behind-the-scenes turbulence.