Cast[]
- Hubert Hawkins as The Cat in the Hat
- Captain Jean as Sarah Hall-Small
- Lord Ravenhurst as Sam-I-Am
- Gwendolyn as Pam-I-Am
- Roderick as Norval the Fish
- Griselda as Cindy Lou Who
- Sir Griswold of MacElwain as King Derwin
- The Black Fox as The Grinch
- Sir Locksley as Thidwick the Moose
- The Captain of the Court Guard as Vlad Vladikoff
- The Contactman of Hawkins at Roderick's Court as Little Cat A
- Giacomo as Joey
- Lord Brockhurst as Sylvester McMonkey McBean
- Lord Finsdale as ZIzzer-Zazzer-Zuzz
- Lord Pertwee as Uncle Norton
- The Archibishop at Roderick's Court as The Lorax