Lorne Greene
Grandfather (voice)
Cast (15)
Sammy Davis Jr.
Head Ratte (voice)
Margery Grey
Heidi (voice)
Pamelyn Ferdin
Klara (voice)
Michael Bell
Willie (voice)
Peter Cullen
Gruffle (voice)
Roger DeWitt
Peter (voice)
Richard Erdman
Grimm (voice)
Fritz Feld
Sebastian (voice)
Burr DeBenning
Herr Sessmann (voice)
Joan Gerber
Fräulein Rottenmeier (voice)
Virginia Gregg
Aunt Dete (voice)
Janet Waldo
Tinette (voice)
Frank Welker
Schnoddle/Hootie (voice)
Michael Winslow
Mountain (voice)
Crew (3)
Robert Taylor
Director
Dennis Venizelos
Background Designer
Rick Maki
Animation