Andy Serkis Details His Avengers 2 Work With Mark Ruffalo, Talks Mystery Role

While The Hulk has a human-shape outline, and a human alter-ego (Dr. Bruce Banner), the reality is that The Hulk isn't human. He is structurally and muscularly bigger than any person could ever hope to be, and as a result he jumps, fights and generally moves in a unique way. It's for this reason that Mark Ruffalo taking on the complete motion-capture performance as The Hulk in the upcoming The Avengers: Age of Ultron was a serious challenge - but, fortunately, he had the greatest teachers in the...