 In June 2017, it was announced that Gabriel Bateman had been cast as the series lead in the role of Wyatt McKenna.In July, further casting announcements were made including Chris Diamantopoulos, Erinn Hayes, and Drew Logan Powell in series regular roles and Swoosie Kurtz in a recurring role.Later that month, the series' main cast was rounded out with the announcement of Kyan Zielinski's casting in the role of Liam McKenna.