The scale of Avengers: Doomsday has already made it one of Marvel Studios' most ambitious productions, bringing together MCU veterans alongside legendary actors from the original X-Men films. With such a massive ensemble sharing the screen, the set has naturally become a place for unforgettable first meetings between generations of superheroes. For Anthony Mackie, one of those encounters turned into a memory he will likely never forget.

While promoting the film at San Diego Comic-Con 2026, the actor reflected on a brief interaction that perfectly captured the warmth and camaraderie behind Marvel's biggest crossover yet.

Speaking to IMDb during San Diego Comic-Con 2026, Mackie recalled meeting Sir Ian McKellen on the Avengers: Doomsday set for the first time. Having grown up watching the acclaimed actor's performances, Mackie admitted the moment felt surreal, especially as he now leads the MCU as Captain America.

“I go to Ian McKellen, he goes, ‘Hello, son.’ I’m like, ‘Ian McKellen, sir. You’re amazing. It’s amazing to work with you.’ He goes, ‘So what are you doing in the film?’ and I’m like, ‘I’m Captain America.’ And he goes, ‘Wonderful... and you deserve that.’” said Anthony Mackie to IMDb at San Diego Comic-Con 2026.

The exchange with IMDb quickly resonated with fans online, not only because of McKellen's gracious response but also because it symbolized the passing of the torch between two generations of Marvel icons. With Mackie officially carrying Captain America's shield, receiving such heartfelt encouragement from the legendary Magneto actor made the behind-the-scenes story even more memorable.

How Is ‘Spider-Man: Brand New Day’ Connected to ‘Avengers: Doomsday’? MCU Timeline Guide

That emotional moment comes as excitement surrounding Avengers: Doomsday continues to reach extraordinary levels before its theatrical debut.

According to Variety, Avengers: Doomsday generated $16.5 million in advance ticket sales within its first day after tickets became available in premium formats across roughly 1,000 domestic theaters. Released alongside the film's first official trailer, the limited presale window still led to premium screenings around the December 18 opening selling out quickly, with exhibitors reportedly adding Christmas Day showtimes to meet demand.

The outlet also noted that the film will not receive IMAX screenings because Dune: Part III has secured exclusive access to the format for three weeks despite sharing the same release date. Marvel instead introduced its own Infinity Vision certification for qualifying theaters, and the strategy appears to be paying off. The presale performance has already doubled the opening-day ticket sales of Deadpool & Wolverine (2024), which ultimately earned more than $1.3 billion worldwide.

As anticipation continues to build, stories like Mackie's heartfelt meeting with McKellen are reminding fans that Avengers: Doomsday is not just bringing together beloved characters, it is also creating unforgettable moments between the actors bringing those heroes to life. If the warmth shared off-screen is any indication, audiences may be in for an equally memorable crossover when the film finally arrives in theaters this December.

“What Are We Going to Do About That?” – Rebecca Romijn Had One Burning Question About Mystique’s Makeup Before ‘Avengers: Doomsday'

What do you think of Ian McKellen's heartfelt words to Anthony Mackie? Let us know your thoughts in the comments!