• Calvin Jarrett as The Cat in the Hat
  • Beth Jarrett as Sarah Hall-Small
  • Condrad Jarrett as Sam-I-Am
  • Dr. Tyrone C. Berger as King Derwin
  • Jeannine Pratt as Pam-I-Am
  • Coach Salan as Joey
  • Karen Aldrich as Cindy Lou Who
  • Joe Lazenby as Thidwick the Big-Hearted Moose
  • Ray Hanley as Sylvester McMonkey McBean
  • Sloan as Little Cat A
  • Ward as The Lorax
  • Audrey as The White-Tufted Floozle Bird
  • Grandmother as Mrs. Funs-ler
  • Ruth as Annie DeLoo
  • Kevin Stillman as The Grinch
  • Grandfather as The Picnic Bug

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