 Adam SandlerLeo (voice) | Leo (voice) |
 Bill BurrSquirtle (voice) | Squirtle (voice) |
 Cecily StrongMrs. Malkin (voice) | Mrs. Malkin (voice) |
 Jason AlexanderJayda's Dad (voice) | Jayda's Dad (voice) |
 Rob SchneiderPrincipal (voice) | Principal (voice) |
 Allison StrongMrs. Salinas (voice) | Mrs. Salinas (voice) |
 Jo KoyCoach Kimura (voice) | Coach Kimura (voice) |
 Sadie SandlerJayda (voice) | Jayda (voice) |
 Sunny SandlerSummer (voice) | Summer (voice) |
| CCoulter IbanezZane (voice) | Zane (voice) |
 Bryant TardyCole #1 Low Voice (voice) | Cole #1 Low Voice (voice) |
| CCorey JCole #1 High Voice (voice) | Cole #1 High Voice (voice) |
| EEthan SmigelAnthony (voice) | Anthony (voice) |
| TTienYa SafkoSkyler (voice) | Skyler (voice) |
 Gloria ManningLogan (voice) | Logan (voice) |
 Carson MinniearCole #2 (voice) | Cole #2 (voice) |
| RRoey SmigelEli / Benji (voice) | Eli / Benji (voice) |
| RReese LoresMia (voice) | Mia (voice) |
 Benjamin BottaniKabir (voice) | Kabir (voice) |
| AAldan Liam PhilipsonTJ (voice) | TJ (voice) |
 Jackie SandlerJayda’s Mom (voice) | Jayda’s Mom (voice) |
 Heidi GardnerEli’s Mom (voice) | Eli’s Mom (voice) |
 Robert SmigelMiniature Horse / Drone / Old Lizard #1 / Old Lizard #3 (voice) | Miniature Horse / Drone / Old Lizard #1 / Old Lizard #3 (voice) |
 Nick SwardsonCinnabun (voice) | Cinnabun (voice) |
 Lileina JoyHamster Kid #1 / Hamster Kid #3 / Featured Vocals (voice) | Hamster Kid #1 / Hamster Kid #3 / Featured Vocals (voice) |
| EElijah KimFeatured Vocals (voice) | Featured Vocals (voice) |
 Stephanie HsuSkyler's Mom (voice) | Skyler's Mom (voice) |
 Ryun YuSkyler's Dad (voice) | Skyler's Dad (voice) |
 Nicholas TurturroAnthony's Dad (voice) | Anthony's Dad (voice) |
| RRebecca VigilAnthony's Mom (voice) | Anthony's Mom (voice) |
