Cast[]
- Holt as The Lorax
- Lester as The Once-Ler
- Cleveland as Ted Wiggins
- Janet as Mrs. Wiggins
- Donna as Audrey
- Cleveland Jr. as Pipsqueak
- Mandy as Aunt Grazelda
- Momstabba as Aloysius O'Hare
- Tim as Lou
- Brian and DeBrian as Brett and Chet
- Jane as The Once-Ler's Mother
- Lois (from Family Guy) as Grammy Norma
- Brian (from Family Guy) as Uncle Ubb