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“I’ve never been on a bigger set on my entire life than in The Avengers [Age of Ultron],” he told “One [part] seemed to be the corner of a town, with helicopter cameras, and drone cameras flying about. I just haven’t seen anything that big, so it was like being a kid on a film set again.”

“This is the biggest thing Marvel have ever done,” said Bettany, who will play android hero The Vision in the superhero sequel. “It was enormous. I remember, we were at Comic-con, and they showed a portion of the footage, and I was just gobsmacked. And I looked down the row and every one of the Avengers was the same.”

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