Top Cast
Lorne Greene
Grandfather (voice)
Sammy Davis Jr.
Head Ratte (voice)
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Margery Grey
Heidi (voice)
Pamelyn Ferdin
Klara (voice)
Michael Bell
Willie (voice)
Peter Cullen
Gruffle (voice)
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Roger DeWitt
Peter (voice)
Richard Erdman
Herr Sessman (voice)
Fritz Feld
Sebastian (voice)
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Joan Gerber
Fräulein Rottenmeier (voice)
