Hayley Atwell reprises her role as Carter from the film series, and is joined by regular cast members James D'Arcy, Chad Michael Murray, and Enver Gjokaj.
The musical sequence, dubbed an informal crossover with Dancing with the Stars, features many of the professional dancers from that series, including Louis van Amstel, Dmitry Chaplin, Karina Smirnoff, Anna Trebunskaya, Sasha Farber, and Damian Whitewood.
Dancers Robert Roldan, Malene Ostergaard, Amanda Balen, Serge Onik, Jenya Shatilova, Lacey Escabar, Alla Kocherga, and Paul Kirkland are also featured in the sequence.
[2] In February 2016, Marvel revealed that main cast members Hayley Atwell, James D'Arcy, Enver Gjokaj, Wynn Everett, Reggie Austin, and Chad Michael Murray would star as Peggy Carter, Edwin Jarvis, Daniel Sousa, Whitney Frost, Jason Wilkes, and Jack Thompson, respectively.
[1] It was also revealed that the guest cast for the episode would include Lotte Verbeek as Ana Jarvis, Lesley Boone as Rose Roberts, Bridget Regan as Dottie Underwood, Rey Valentin as Agent Vega, Kurtwood Smith as Vernon Masters, Ken Marino as Joseph Manfredi, Matt Braunger as Dr. Aloysius Samberly, Max Brown as Michael Carter, Tim Soergel as Paul, Bert Rotundo as Ralph, Lon Gowan as truck driver and Russell Edge as Agent Blackwell.