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 (William Burnside) in contemporary times, to battle the original Captain America). This complicated origin is the reason that some sources list "Young Men" #24 as this character's first appearance, when in fact this, and subsequent 1950s-published Captain America stories, was clearly created with the intention of depicting the original Captain America. A 1977 story, "What If" Vol. 1 #4, (August, 1977), introduces two other, previous Captain Americas - William Naslund, appointed by Truman in 1945 to succeed the original Captain America, and Jeff Mace, who succeeds Naslund as Cap in the spring of 1946 after Naslund is killed in action. These versions