Captain America: The Winter Soldier who played Peggy Carter in "Captain America: The First Avenger", said that she would not appear in the sequel. However Stanley Tucci, who played Dr. Abraham Erskine in the previous film, later said that Atwell would reappear in a flashback scene. Also in January, Marvel Studios announced that the film would be released in 3D, and Anthony Mackie said filming would begin on April 1, 2013. Later that month, Toby Jones, who portrayed Arnim Zola in the first film, said that he would reprise the role in the sequel. By the end of the month, stages were being built for
Captain America: The First Avenger that phase of the production where money doesn't matter: 'Let's put all the greatest stuff up on the wall and [then later] see what we can afford. The film, he said, will begin "in 1942, 1943" during World War II. "The stuff in the '60s and '70s [comic books] we're sort of avoiding. We're going back to the '40s, and then forward to what they're doing with Captain America now." In February 2010, Johnston stated that the Invaders will appear in "the entire second half" of the film, leading fans to speculate this was the World War II-era Marvel superhero