- Arlo as Owen
- Libby as Claire
- Forrest as Gray
- Buck as Zach
- Thunderclap as Vic Hoskins
- Forrest as Barry
- Poppa as Simon Masrani
- Riley (from Inside Out) as Vivian
- Butch as Scott
- Mordu (from Brave) as Indominus Rex
- Momma as Rexy
- Dean Hardscrabble (from Monsters University) as Mosy The Mosasaurus
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