Andy Serkis is a busy man, and his motion capture abilities are incredible. So it surprised everyone when he showed up in the Avengers: Age of Ultron trailer as a character. Though we don’t have any “official” confirmation of who he’s playing, we have heard from the man himself to the fact that he really did do mo-cap for this film.
“We gave Mark weights, we had voice projections so he could do his Hulk roar,” he explains. “On screen we could have a virtual representation of the low-res avatar of The Hulk, so he could come out and feel that sense of scale.”