- Marshal Howard Nightingale as The Cat in the Hat
- Jack Strawhorn as King Derwin
- Wesley as Morton the Elephant Bird
- Hellman as Sam-I-Am
- Krag as Joey
- Pensteman as Mr. Brown
- Peppe as Mack the Turtle
- Mrs. Cooper as Cindy Lou Who
- Mr. Cooper as Horton the Elephant
- Wiley as The Grinch
- Laurie as Sarah Hall-Small
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