Alan Cumming accidentally injured Pedro Pascal during the making of Avengers: Doomsday

During an appearance on Jimmy Kimmel Live!, the host asked Cumming what fans could expect from Nightcrawler in Avengers: Doomsday, to which he replied: "All of [the X-Men cast] are in it, too.

"What was funny was that in my first scene with Pedro, he hurt his neck and had to go home. I broke Pedro."

The Traitors hosted insisted the mishap did not take place during a fight scene, and was simply a production slip-up.

He explained: "No, I wasn't fighting. No, no. I was just, sort of, being ... we were just together in a scene, and I wasn't fighting, no.

"He's got these big long arms and everything, so it's quite complicated. I do have a tail, but I didn't have my tail on at the time. Pedro didn't have his arms on either."

As well as Cumming's Nightcrawler, Avengers: Doomsday will see the return of X-Men icons Sir Patrick Stewart (Professor X), Sir Ian McKellen (Magneto), Kelsey Grammer (Beast), Channing Tatum (Gambit), James Marsden (Cyclops) and Rebecca Romijn (Mystique).

Avengers and Thunderbolts* stars Chris Hemsworth (Thor), Tom Hiddleston (Loki), Paul Rudd (Ant-Man), Anthony Mackie (Captain America), Florence Pugh (Yelena Belova), Sebastian Stan (James 'Bucky' Barnes), Wyatt Russell (U.S. Agent), David Harbour (Red Guardian) and Lewis Pullman (Sentry) are also confirmed to appear in the blockbuster.

Meanwhile, the Fantastic Four - as portrayed by Pascal (Mr. Fantastic), Vanessa Kirby (Invisible Woman), Joseph Quinn (The Human Torch) and Ebon Moss-Bachrach (The Thing) - will also have a role to play in the flick.

It has also confirmed been confirmed that Chris Evans will return as Steve Rogers after last playing Captain America in 2019's Avengers: Endgame.

Avengers: Doomsday - which is being helmed by directors Joe and Anthony Russo and is due to release on December 18, 2026 - will likely follow the Avengers, the New Avengers, the X-Men and the Fantastic Four as they join forces to stop Doctor Doom (Robert Downey Jr.) from unleashing his devastating plans for the Multiverse.

Cumming previously revealed he had been "learning stunts" for a "fight scene" in Avengers: Doomsday.

Speaking with Buzzfeed UK, he said: "I was learning stunts yesterday for some fight scene and I just think, I'm 60 years old. 23 years ago, I played that superhero.

"I was kind of old for a superhero even then. And now I'm back doing it. And that, to me, is hilarious.

"I'm sort of learning these fights and I'm like, 'What? Who am I fighting with?' And they said, 'You're hitting Pedro Pascal against the head,' or something."