Captain America: Civil War's screenplay was by Christopher Markus and Stephen McFeely.
 A few days later, Marvel revealed that the film would be titled Captain America: Civil War, confirming Downey's appearance and announcing that Chadwick Boseman would appear in the film as Black Panther ahead of his own solo film
 The film's title and premise were revealed in October 2014, along with Downey's involvement as Stark; additional cast members joined in the following months

