- Santa Claus as The Lorax
- Yukon (from Rudolph) as Once-ler
- Donner (from Rudolph) as Young Once-ler
- Kris Kringle as Ted
- Ms. Jessica as Audrey
- Mrs. Donner (from Rudolph) as Ted's Mom
- Topper as Pipsqueak
- Burgermiester as Mr. O'Hare
- and more
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