Hayley Atwell admitted on Twitter while filming the first season of Agent Carter, she had to go get her picture taken for her driver's license/ID at the Department of Motor Vehicles. As a result, her photo on the card has her in the hairstyle, makeup and outfit of Peggy Carter.
James D'Arcy was initially nervous about portraying Jarvis's comedic side, given his history of "predominantly playing psychopaths."
Hayley Atwell describes her character's elderly appearance in "Captain America: The Winter Soldier (2014)" as a benefit for the show: "We have an opportunity, if the show does go into more seasons, we know that we can explore all of these aspects of her character because we know she lives such a long life and she's had a fulfilled life. obviously, the era is 1946 but in the second, third, fourth, fifth season - if it goes onto that - we can explore different time periods. We can explore the late forties, the early fifties, the sixties, the seventies, the eighties, up until present day, so it's very exciting because of that."
In the German version, the voice of Jarvis is the same as the voice of Tony Stark's AI J.A.R.V.I.S. in the "Iron Man" movies.
Actor Enver Gjokaj (Agent Sousa) also played one of the NYPD officers during the attack on New York in "The Avengers (2012)," thus appearing in the same cinematic universe portraying a man of his age in two different time periods.