Grandfather
Dete, Rottenmeir, Bridgette, Grandmother
Karl (as Gabriel Bismuth)
Clara Sesemann
Mister Bakker
Peter's Grandmother
Heidi (voice)
Narrator
Heidi
Hans / Friedrich / Mr. Traber (voice)
Theresa
Mister Keller (voice) (as Gilbert Levy)
Miss Rottenmeier
William
Sebastian
Dete