Arriving hotfoot from the premiere of their movie Avengers: Age of Ultron, Ruffalo, Renner and Olsen chat about being superheroes.

Ruffalo, talking about how new CGI technology on the movie enabled him to be part of the action this time, he says, "When I did the first one they shot all the stuff of me against a green screen. I had to put my head in a vice and do all the Hulk acting with my head completely still, which I hated. This time, wearing a mask, I was able to act with the other actors. Last time I did most of it by myself locked in a broom closet," adding, "Once the laughter was over it was way easier doing it with everyone else."

Much to Ruffalo's amusement, Widdicombe interjects, "Does The Hulk show up against a green screen?"

Reminded by Renner that he had to wear a leotard and headband for the filming, Ruffalo says, "It was a man-cancelling suit. It makes you look small everywhere you wished you looked big, and big everywhere you wished you looked small."

Asked about his children’s reaction to his character, he says, "It was amazing in the beginning because I could get them to do stuff; I’d say, ‘Go brush your teeth, your dad’s The Hulk,’ and now I try it and it doesn’t work so well. I’ve got angry but that doesn’t work after a while either. They’re like, ‘Right, get green and big and then we’ll talk.’"

Renner, asked if he used a real bow and arrow as Hawkeye in the filming of the movie, says, "No. I’d kill someone. I only did it properly once or twice for a close up and they had to clear the set so it didn’t go in somebody."

Olsen, talking about her character Scarlet Witch, and asked when she had found out she wouldn’t have to be the scantily clad, comic book version of her character, she says, "The first time I met Joss [Whedon] he led with that. He said, ‘Look at the comics and you will never look like that.’ That felt great as I would never want to wear a leotard, headband and cape." Adding jokingly, "Not even in my own private life."

Asked about growing up with her older sisters – Olsen twins, Mary-Kate and Ashley – she says, "They were always famous, since they were six months old when they started working. They have not stopped and they are 28. They literally do not know what it’s like not to work."

Widdicombe, talking about one of his oddest fans, he says, "One guy asked for a picture of my naked feet. I thought he was working for a charity and innocently I presumed it was for an auction. I forgot to do it and he was very persistent. It turns out he was just into feet."

Blur perform Lonesome Street live in the studio before joining Norton for a chat.

Damon, talking about the band’s new album says, "We recorded around 40 hours of music – not all of it was great music obviously, but we edited it down."

Dave, asked about being a criminal lawyer as well as a band member say, ‘It’s a privilege to do both." And Alex, who recently won an award for his cheese making, says, "Winning that was more fun that the Brits."

Asked if they are enjoying their success in a different way this time round, Coxon says, "We really are, in a ‘Oh, I need an early night sort of way.’"

And finally, Norton pulls the lever on more foolhardy audience members brave enough to sit in the Red Chair.

This episode of The Graham Norton Show airs on Tuesday, 21 April at 21:40 on BBC Entertainment, channel 120 on DStv.