"I was pitching Ultron before I took the job on the first movie. I was like, 'I don't know if I want to do this, but for the second one, you should totally do Ultron.' Because he's been a thorn in their side as much as any other character over the years and particularly back in my history. He was great. He's somebody who can juice things up and he's a real problem for the Avengers. That's not always easy to find. It's not like the Vulture is really going to give them a hard time for 20 minutes."
We also reported during Comic-Con 2013 that Ultron will get a new origin story for this Marvel Phase Two sequel, which Joss Whedon is directing from his own screenplay. Hopefully we'll find out soon who is actually playing the villain, so stay tuned.
In addition, we have a video interview that Joss Whedon conducted at Comic-Con 2013 with Marvel Live, where the filmmaker reveals more details about this highly-anticipated sequel.
Avengers: Age of Ultron comes to theaters May 1st, 2015 and stars Aaron Taylor-Johnson, Scarlett Johansson, Robert Downey Jr., Elizabeth Olsen, Chris Hemsworth, Chris Evans, Cobie Smulders, Jeremy Renner. The film is directed by Joss Whedon.