- Nick as The Lorax
- Robinson as Once-ler
- Eduardo as Young Once-ler
- Paul Blart as Ted
- Donna as Ted's Mom
- Divina as Audrey
- Lane as Pipsqueak
- Kate (from Zookeeper) as Grammy Norma
- Vincent as Mr. O' Hare
- Saul as Fat Bar-ba-loot
- Ryan and Xander (from Alvin and the Chipmunks: The Squeakquel) as Once-ler's Brothers
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