There is no one more associated with the art of motion capture acting than skilled thespian Andy Serkis. He has become known for his expertise through various iconic performances such as Gollum in the The Lord of the Rings franchise, a giant gorilla in the 2005 King Kong, and lead ape Caesar in the new Dawn of the Planet of the Apes. So who better to teach the trade? While he is not appearing in Avengers: Age of Ultron, Serkis will be coaching one of the actors, helping them to perfect their own mo-cap performance.
Andy Serkis isn't just lending his expertise to Mark Ruffalo. He was also a consultant on this summer's Godzilla reboot. And just yesterday he was announced as a main cast member for Star Wars: Episode VII. Though, it is not known if he will be playing a fully CGI character in the sequel, or an actual human being.
In other Avengers: Age of Ultron news, its being reported that Scarlett Johansson's growing baby bump will be CGI'd out of the finished film. Right now she is being required to wear a special green band around her midriff while shooting.