To prepare for the show, the actors attended a two-week sitcom boot camp to "just really understand the tone and the structure for each different decade," Teyonah Parris, who plays Monica Rambeau, told CinemaBlend. During this time, the talent watched a lot of classic comedies in order to replicate their styles. This allowed them to not only chart physical changes like the lingo and language but how comedy has changed over time.
"We tried to put our finger on what comedy was like back in the '50s versus the '60s, because it really does change," Shakman told The Hollywood Reporter. "We worked with a dialect coach [Courtney Young] on how they spoke in different eras, and how they walked, talked and moved. It was really important because ultimately this is the reality of that episode, and we wanted people to fully buy into it."