Cast[]
- Nelson Muntz as The Cat in the Hat
- Lyle Lanley as Mack the Turtle
- Sideshow Bob as Horton the Elephant
- Legs as Gordon
- Louie as Norval the Fish
- Jimbo Jones as Sam-I-Am
- Comic Book Guy as Mr. Brown
- Superintendent Chlamers as The Lorax
- Kearny as Mr. Knox
- Dolf as Fox in Socks
- Mr. Burns as Conrad
- Cheif Wiggium as The Grinch
- Artie Ziff as Thidwick the Big-Hearted Moose
- Janey Powell as Jane Kangaroo
- Agnes Skinner as Pam-I-Am
- Frank Grimes Jr. as Nick
- Patty as Sarah Hall-Small
- Cecil Terwilliger as Little Cat Fleep
- Homer as North-Going Zax
- Bart as South-Going Zax
- Shelby as Terrence McBird