The core Cooper family—Iain Armitage (Sheldon), Zoe Perry (Mary), Lance Barber (George Sr.), Montana Jordan (Georgie), and Raegan Revord (Missy)—are featured alongside notable guest stars: as Dr. Flora Douglas Harry Groener as Elliot Douglas Rex Linn as Principal Tom Petersen Ryan Phuong as Tam Nguyen Technical File Information (H.264)