Mayzie McGrew (voice)
Francesca Marie Smith
Cat in the Hat (voice)
Henry Gibson
Butch (voice)
Ben Smith
Einstein (voice)
John Christian Graas
Finagle (voice)
Tim Curry
Mayor (voice)
George Hearn
Principal (voice)
Lewis Arquette
Dr. Eisenbart (voice)
Jonathan Winters
Miss Sneetcher (voice)
Susan Silo
Mrs. McGrew (voice)
B.J. Ward
Mr. McGrew (voice)
Paul Eiding
Finch (voice)
Robert Ridgely
Book
Dr. Seuss
Writer
Executive Producer
Buzz Potamkin
Producer
Christopher O'Hare
Storyboard Artist
Richard Fawdry
Character Designer
Director
Tony Collingwood