Paul Bettany has a new interview with Digital Spy to promote his new film Blood, and he also discusses his role in the Iron Man and Marvel franchise. He mentions that it was an incredibly small amount of effort required of him, and he hasn’t even watched the result of his work.
He says, “I get brought in right at the last moment, where if they've worked out that they have a clarity issue or whatever, they can always add it to [my] dialogue. I feel like a pirate. This is robbery. I walk in, I say some lines on a piece of paper for two hours, and then they give me a bag of money and I leave and I go about my day. I sort of feel guilty, because at least acting can be exhausting, with long hours...but I do nothing! And I've never seen one of them. It's not because of any snobbishness, it's just not my thing. I'm plagued by fanboys who love Jarvis... They come up and I've got no idea what they're talking about. I've got no idea about Iron Man - I don't get sent the whole script."
Bettany’s voice work as Jarvis has been deemed irreplaceable by fans, but it just seems like another day of work for Bettany, who’s always been one of the more prolific British actors of his generation.