Collider recently posted an interview with actor Hugo Weaving who indicated that even though contractually he might be obligated to return to a Marvel movie as the Red Skull, he didn't really want to.
"I did that for Captain America. I think the tendency, with those films, would be to probably not bring a villain back. They might for The Avengers, but I didnít think Iíd be in Captain America 2 or 3. I donít think Red Skull will be there. And itís not something I would want to do again," he said, adding, "Iím glad I did it. I did sign up for a number of pictures and I suppose, contractually, I would be obliged to, if they forced me to, but they wouldnít want to force someone to do it, if they didnít want to. I think Iíve done my dash with that sort of film. It was good to do it and try it out, but to be honest, itís not the sort of film I seek out and really am excited by. As an actor, to do all sorts of different films is great. It stretches you in different ways. But, I increasingly like to go back to what I used to always do, which is to get involved with projects that I really have a personal affiliation with.
Captain America: The Winter Soldier is slated for release on April 4, 2014 and Marvel's The Avengers 2 is set to hit theaters on May 1, 2015.