- Kenneth James Kitsom as The Cat in the Hat
- Dr. Marta Shearing as Daisy-Head Mayzie
- Eric Byer as The Grinch
- Mark Turso as Joey
- Terrence Ward as Mack the Turtle
- Outcome 3 as Yertle the Turtle
- CIA Deputy Director Pamela Landy as Cindy Lou Who
- Dr. Albert Hirsch as Horton the Elephant
- Noah Vosen as Sam-I-Am
- CIA Director Ezra Kramer as Joey
- Dita as Sarah Hall-Small
- and more
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