Alongside the initial series announcement, it was reported that Chase Stokes, Madelyn Cline, Madison Bailey, Jonathan Daviss, Rudy Pankow, Charles Esten, Austin North, and Drew Starkey were cast in starring roles.[1] On July 2, 2019, Caroline Arapoglou joined the cast in a recurring role.[8] On October 22, 2020, Elizabeth Mitchell was cast in a recurring role for the second season.[7]