Robin Atkin Downes also voices the popular masked villain in the new animated series The Avengers: Earth's Mightiest Heroes. The purple clad Marvel character is the son of World War II's Baron Zemo, who, according to Comic Book Movie is rumored to be appearing in Captain America: The First Avenger.
No other details have been released about the character's appearance in the upcoming movie. It is not clear whether Baron Helmut Zemo will be CGI, or if a body double will be playing the character while Robin Atkin Downes provides the voice only.
Marvel's The Avengers was released May 4th, 2012 and stars Robert Downey Jr., Chris Evans, Mark Ruffalo, Chris Hemsworth, Scarlett Johansson, Jeremy Renner, Tom Hiddleston, Clark Gregg. The film is directed by Joss Whedon.
Captain America: The First Avenger was released July 22nd, 2011 and stars Chris Evans, Hayley Atwell, Sebastian Stan, Tommy Lee Jones, Hugo Weaving, Dominic Cooper, Richard Armitage, Stanley Tucci. The film is directed by Joe Johnston.