- Dr. McCarthy as The Lorax
- Alexander (from Journey 2: The Mysterious Island) as Once-ler
- Homer (from The Simpsons) as Young Once-ler
- Dr. Clay as Ted
- McGoongal (from Harry Potter) as Ted's Mom
- Winter as Audrey
- Sawyer as Pipsqueak
- Charlie (from Rio 2) as Mr. O'Hare
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