New casting reports for the upcoming blockbuster film 'Avengers 2: Age of Ultron' have recently been released, and add some pretty big names to the already impressive list.

Joss Whedon has gotten more resourceful this time. Not only is he putting Chris Hemworth, Robert Downey Jr., Chris Evans, Mark Ruffalo, Scarlett Johansson, Jeremy Renner, Cobie Smulders and Samuel L. Jackson back on the team, but he's also putting James Spader, Don Cheadle, Paul Bettany, Elizabeth Olsen and Aaron Taylor-Johnson right alongside them.

According to reports, people should also expect a lot of surprise casts in the future. Stellan Skarsgard told Total Film that he will be making his fourth appearance in the Marvel universe as a member of 'Avengers 2: Age of Ultron' cast.

The Swedish actor also talked about his past experience with Marvel when he played as Dr. Erik Selvig in 'Thor'. He confirmed that his part is small but "it's something really nice."

However, he did not confirm if Dr. Selvig will be the role he is playing for the upcoming sequel, however, he confirmed one strange detail about it. The actor will apparently have to be naked at one point in the film.

"Yeah, I was naked again. They called my agent and said, 'Do you think Stellan will mind being naked?' My agent laughed his head off. Yeah, I almost insist! Sometimes with a contract you get a nudity clause, which is fantastic. It's supposed to protect me from having my genitals exploited, which I doubt anybody would make a dime on," he said.

'Avengers 2: Age of Ultron' will hit the theaters on May 1, 2015.