• Dexter as The Cat in the Hat
  • Tall Dexter as Norval the Fish
  • Dee Dee as Cindy Lou Who
  • Dexter's Mom as Sarah Hall-Small
  • Dexter's Dad as Mack the Turtle
  • Dexter's Grandpa as Mr. Brown
  • Mandark as The Grinch
  • Lee Lee as The White-Tufted Floozle Bird
  • Mee Mee as Pam-I-Am
  • Dexter's Monkey as Sam-I-Am
  • Valhallen as Little Cat Fleep
  • Mandark's Duck as The Once-Ler
  • Mayor Glory as Joey
  • Krunk as Horton the Elephant
  • Lalava as Jane Kangaroo
  • Douglas as The Lorax
  • Mitch and Clem as Mr. Knox and Fox in Socks
  • Dextor as Young Cat in the Hat
  • Action Hank as Sylvester McMonkey McBean
  • Pony Puff Princess as Daisy-Head Mayzie
  • Koosalagoopagoop as Thidwick the Big-Hearted Moose
  • Agent Honeydew as Audrey
  • School Bully #1 as North-Going Zax
  • School Bully #2 as South-Going Zax

See also

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