Kelly sings "Uninvited"; Simon Cowell, Terry Crews, Heidi Klum and Sofía Vergara ("America's Got Talent"); Spinning Your Wheels game; "Unnecessary Inventions"; nurse choir; Tomorrow X Together performs.
| Name | Type | Role | |
|---|---|---|---|
| Choi Soo-bin | Musical Guest | Soobin | |
| Choi Beom-gyu | Musical Guest | Beomgyu | |
| Kang Tae-hyun | Musical Guest | Taehyun | |
| Kai Kamal Huening | Musical Guest | HueningKai | |
| Choi Yeon-jun | Musical Guest | Yeonjun | |
| TXT | Musical Guest |