Captain America: The First Avenger Studios confirmed the latter in May. Ryan Phillippe and John Krasinski were also considered for the role of Captain America. In April 2010, Sebastian Stan, who had been mentioned in media accounts as a possibility for the title role, was cast as Bucky Barnes. Stan is contracted for multiple films. Also in April, Marvel announced that Hayley Atwell had been cast as Peggy Carter, and that the film's name had been changed from "The First Avenger: Captain America" to "Captain America: The First Avenger". The next day it was reported that Joss Whedon would be rewriting the script as part
Captain America: The Winter Soldier Robert Redford, and Samuel L. Jackson. In "Captain America: The Winter Soldier", Captain America, Black Widow, and Falcon join forces to uncover a conspiracy within S.H.I.E.L.D. while facing a mysterious assassin known as the Winter Soldier. A major influence in "The Winter Soldier" was conspiracy fiction from the 1970s such as "Three Days of the Condor", with the script also drawing from the Winter Soldier story arc written by Ed Brubaker. The script was written in 2011, with the Russo brothers entering negotiations to direct in June 2012 and casting beginning the following month. Principal photography commenced in April 2013