- Dr. Zoidberg as The Lorax
- Professor Farnsworth as The Once-ler
- Scruffy as Young Once-ler
- Nibbler as Pipsueak
- Fry as Ted Wiggins
- Leela as Audrey
- Amy as Ted's Mom
- Inez Wong as Grandma Norma
- Wernstrom as Mr. O' Hare
- Kyle (from South Park) as Fat Bar-ba-loot
- Chris and Brian (from Family Guy) as The Once-Ler's Brothers
Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.