Director/a
Ray Patterson
DIRECTOR/A
Don MacKinnon
Reparto (por orden de créditos)
Frank Welker
Cat
Mona Marshall
Nicole
Hamilton Camp
Dr. Crabneckel
Michael Bell
Otis
Neil Ross
James
Keland Love
Tall Boy
Peter Renaday
ACTOR
Marilyn Schreffler
Maxie
June Foray
Aunt Alice
Pat Fraley
Michael
Darleen Carr
Henry's Mom
Wayne Scherzer
Noah Hathaway
Joan Gerber
Kenneth Mars
Sugar Cane
Christina Lange
Hakeem Abdul-Samad
Jeremy Schoenberg
Sean G. Griffin
Amy Licon
Lennie Weinrib
Jean-Pierre
Jack Angel
Jacques
Will Ryan
Robbut
Al Fann
Mac
Linda Gary
Dennis Howard
Stephen Winter
George Takei
Guard
Henry Gibson
Sam
Maurice LaMarche
Sid
Brian Tochi
David Mendenhall
Henry Green
Howard Morris
Zelda Rubinstein
Michael Paul Chan
Allan Melvin
Mason Adams
Narrator
Emily Kuroda
Russi Taylor
Elizabeth
John Stephenson
Major Tybo
Carl Steven
Ralph
Dave Madden
Arnold's Dad
Haunani Minn
Foster Brooks
Gnome
Paul Eiding
Dr. Fargo
Brian Cummings
Arno
Walker Edmiston
Patrick Gorman
Frank Nelson
Peter Leeds
Louie
Dena Dietrich
Mrs. Farber
Patrick Pinney
Ken Sansom
Lou
Bever-Leigh Banfield
Nurse
Bill Scott
Chad Sheets
Walter
Ernest Harada
Claudette Wells
Zale Kessler
Dr. Hennenglass
William Callaway
David McKnight
Philip L. Clarke
Anna Mathias
Rosie Lee Hooks
Marissa Mendenhall
Adele
Corey Rand
Dr. Pangalos
Jimmy Weldon
Stu
Cheri Steinkellner
Ted Schwartz
Henry's Dad
Richard Shoff
Betsy Chasse
Diana Daves
Anna Maria Poon
Chub Bailly
Plantagenet
Mimi Seaton
Janice Motoike
Brian Lee
Hal Smith
Robert Jayne
Jake
Roger C. Carmel
Jeff Altman
Christopher Carter
Terence McGovern
Vivian Bonnell
Ms. Snergle
Laura Jacoby
Mindy
Darren Lee
Emily Moultrie
Ellen Gerstell
Michael Dees
Devin McLaughlin
Tony Torez
Brandon Stofflet
Katie Leigh
Sheryl Bernstein
Josh Rodine
Tracy Rowe
Alan Oppenheimer
Vicki Davis
Ratha
Steven Schatzberg
Malcolm-Jamal Warner
Host
Robert Keeshan
Connor Quinn
Various(uncredited)