Cast[]
- The Cat in the Hat as Jimmy Neutron
- Sam-I-Am as Carl Wheezer
- Norval the Fish as Sheen Estevez
- Sarah Hall-Small as Cindy
- Cindy Lou Who as Libby
- Young Cat in the Hat as Bolbi
- Little Cat Fleep as Goddard
- The Lorax as Nick
- The Birthday Bird as Tee
- Mr. Knox as Zixs
- Fox in Socks as Travaltron
- Vlad Vladikoff as King Goobot
- The Grinch as Ooblar
- Jane Kangaroo as Beautiful Gorgeous
- Pam-I-Am as Grandma Taters
- The White- Tufted Floozle Bird as Jimmy's Mom
- Mack the Turtle as Jimmy's Dad
- Joey as Sheen's Dad
- Aunt Myrtle as Sheen's Mom
- Horton the Elephant as Carl's Dad
- and more