Ian McKellen Returns as Magneto in Avengers: Doomsday

At 86 years old, Sir Ian McKellen is doing something most actors half his age wouldn't dare: pushing stunt doubles aside to perform his own action sequences on one of the biggest films ever made. The legendary British actor is back in the headlines for two very different reasons — his triumphant return as Magneto in Avengers: Doomsday, and a pointed public critique from fellow acting icon Brian Cox. Whether you're a Marvel fan eagerly watching the Doomsday trailer or someone who just saw the Brian Cox interview making the rounds, here's everything you need to know about why Ian McKellen is the name everyone is talking about right now.

Ian McKellen Returns as Magneto in Avengers: Doomsday

After the 2019 Disney-Fox merger handed Marvel Studios the film rights to the X-Men, fans spent years wondering when — and whether — the original cast would return. Now that question has been definitively answered. Ian McKellen is reprising his iconic role as Magneto in Avengers: Doomsday, and by all accounts, he showed up to the production with an energy that electrified the entire cast.

McKellen had previously teased what he described as a "massive moment" involving Magneto in the film, and given the scale of the Doomsday project, expectations are sky-high. The trailer's arrival confirmed what Marvel loyalists had hoped: the original X-Men lineup is back, and McKellen is leading the charge with the same ferocity he brought to the role more than two decades ago.

Fellow returning cast member Alan Cumming, who plays Nightcrawler, also wrapped his scenes and reported being able to execute his stunt work without issue — a sign that the production leaned into the physicality of these beloved characters rather than shying away from it.

The Stunt Moment That Inspired James Marsden

Perhaps the most talked-about story coming out of the Avengers: Doomsday press cycle is the on-set moment that changed James Marsden's entire outlook on his return. In a recent interview with the New York Post published April 5, 2026, Marsden revealed he had serious reservations about reprising his role as Cyclops after a 12-year absence from the character.

Marsden, 52, last played Scott Summers in a brief cameo in X-Men: Days of Future Past back in 2014. After so long away, he was understandably unsure whether the character still had a place — and whether he had the physical and emotional bandwidth to do it justice. Then he watched Ian McKellen on set.

McKellen, 86, reportedly pushed his stunt double aside and insisted on performing the stunt himself — a moment of fearless, veteran commitment that Marsden described as a turning point in his own confidence.

Seeing an 86-year-old legend refuse to step back from the physical demands of the role gave Marsden the push he needed. As reported by Comic Book Movie, Marsden embraced his return fully — including suiting up in a comic-accurate blue-and-yellow Cyclops costume for the first time in the franchise's history. That detail alone has sent X-Men fans into a frenzy.

Brian Cox Takes Aim: 'Not to My Taste'

Not everyone is singing McKellen's praises. On April 4, 2026, a Brian Cox interview with The Times began circulating widely, in which the 79-year-old Succession star made his feelings about McKellen's acting style unmistakably clear: it is, in his words, "not to my taste."

Cox did not stop at McKellen. According to Metro, the Scottish actor also leveled criticisms at Edward Norton, Kevin Spacey, and Johnny Depp in the same interview — placing McKellen in notably complicated company. MSN's coverage of the story further detailed Cox's remarks, which have sparked considerable debate in entertainment circles.

What makes the Cox-McKellen dynamic particularly interesting is their shared history. The two acting heavyweights have worked together multiple times over the decades, most notably on a Royal National Theatre production of King Lear — one of the most demanding works in the theatrical canon. Their rivalry, if it can be called that, is rooted in a deep mutual familiarity rather than passing acquaintance.

Further reporting from MSN noted that Cox's comments have drawn a range of reactions from the entertainment community — some finding his candor refreshing in an industry often defined by carefully managed public personas, others viewing it as unnecessarily pointed toward a peer with an unimpeachable body of work.

Ian McKellen's Legacy: Awards, Theatre, and the Screen

Whatever Brian Cox's personal preferences, the record speaks for itself. Ian McKellen is one of the most decorated actors in the history of the English-speaking stage and screen. His accolades include:

• A Tony Award for his work on Broadway
• Six Laurence Olivier Awards, the most prestigious honors in British theatre
• Two Academy Award nominations — for Gods and Monsters (1998) and The Lord of the Rings: The Fellowship of the Ring (2001)
• A knighthood, making him Sir Ian McKellen

His dual franchise legacy — Gandalf in Peter Jackson's Lord of the Rings and Hobbit trilogies, and Magneto across the original X-Men film series — represents a cultural footprint that few actors of any generation have achieved. That he is now stepping back into the Marvel Cinematic Universe at 86, performing his own stunts, adds a remarkable new chapter to that story.

What Avengers: Doomsday Means for the X-Men Legacy

The return of the original Fox-era X-Men cast is more than a nostalgia play. For millions of fans who grew up watching the 2000 X-Men film and its sequels, McKellen's Magneto and the characters around him defined what superhero cinema could be before the MCU reshaped the genre entirely. Bringing them back — and doing so in a way that honors both the characters and the actors — is a significant storytelling gamble.

James Marsden's Cyclops appearing in a comic-accurate blue-and-yellow suit suggests the filmmakers are leaning into the full mythology rather than simply offering fan service. The fact that McKellen, Marsden, and Cumming all completed physically demanding work on set indicates the production took the returning cast seriously as active participants rather than cameo fixtures.

For McKellen specifically, a "massive moment" involving Magneto in a film of Doomsday's scale could represent the definitive cinematic send-off for one of the most compelling villain-turned-antihero characters in comic book history.

Frequently Asked Questions About Ian McKellen

How old is Ian McKellen?

Ian McKellen is 86 years old. Despite his age, he remains one of the most active and physically committed performers in the industry, as evidenced by his decision to perform his own stunts on the set of Avengers: Doomsday.

What role does Ian McKellen play in Avengers: Doomsday?

McKellen is reprising his role as Magneto, the powerful mutant he first portrayed in the original X-Men (2000). He has described his character's involvement as involving a "massive moment" in the film.

Why did Brian Cox criticize Ian McKellen?

In an interview with The Times published in April 2026, Brian Cox stated that McKellen's acting style is "not to my taste." Cox and McKellen have a long professional history, including working together on a Royal National Theatre production of King Lear. Cox made similar criticisms of other actors including Edward Norton, Kevin Spacey, and Johnny Depp in the same interview.

When did James Marsden last play Cyclops before Avengers: Doomsday?

James Marsden last appeared as Cyclops in a brief cameo in X-Men: Days of Future Past in 2014 — making his return in Avengers: Doomsday a 12-year gap between appearances in the role.

How did Ian McKellen help James Marsden feel confident about returning?

Marsden has said that watching McKellen push his stunt double aside and insist on performing the physical work himself was a galvanizing moment. Seeing an 86-year-old commit so fearlessly to the role helped Marsden overcome his own doubts about returning as Cyclops after more than a decade away.

Conclusion

Ian McKellen at 86 is, by any measure, a force of nature. The convergence of his Avengers: Doomsday return and Brian Cox's unsolicited critique has put him at the center of two of the biggest entertainment conversations of the week — and both stories, in their own way, underscore just how singular his presence in the industry remains. Whether you're moved by his on-set fearlessness, fascinated by the Cox controversy, or simply counting down the days until Doomsday hits theaters, one thing is certain: nobody does it quite like Sir Ian McKellen.