Stephen McFeely is a co-writer of Captain America: The First Avenger, Thor: The Dark World, Captain America: The Winter Soldier, Guardians of the Galaxy (script polish only), Agent Carter episode "Now is Not the End" and Captain America: Civil War and Avengers: Infinity War and the upcoming Avengers 4 with Christopher Markus. He is also both the co-creator and co-executive producer of the TV series Agent Carter  and co-wrote the episode "Now is Not the End" with Markus. Both he and Markus had cameo appearances in The Winter Soldier as interrogators of Georges Batroc.