The world goes backwards on Opposite Day. The kids become adults, and the adults become kids.
| Actor | Role |
|---|---|
 William BrentSammy Benson | Sammy Benson |
 Ariel WinterCarla Benson | Carla Benson |
 Pauly ShoreRobert Benson | Robert Benson |
| CColleen CrabtreeDenise Benson | Denise Benson |
 Dylan CashChaz | Chaz |
 Dick Van PattenJack Benson | Jack Benson |
 Renée TaylorMartha Benson | Martha Benson |
 French StewartGodfrey | Godfrey |
 Jared GilmoreBaby Bailiff | Baby Bailiff |
 Katherine DisqueMs. Jenkins | Ms. Jenkins |
 Bradley Steven PerrySecurity Guard | Security Guard |
 Eric UngerSecurity Guard | Security Guard |
 Nadji JeterJasper | Jasper |
 Uriah SheltonSecurity Guard | Security Guard |
 Gina La PianaCorporate Exec #2 | Corporate Exec #2 |
 Brianne TjuClient #2 | Client #2 |