| Episode cast overview: |
 | Susanna Bonasewicz | - | Bibi Blocksberg (voice) |
| Hallgard Bruckhaus | - | Barbara Blocksberg (voice) (as Hallgerd Bruckhaus) |
| Guido Weber | - | Bernhard Blocksberg (voice) |
| Gisela Fritsch | - | Karla Kolumna (voice) |
| Heinz Giese | - | Bürgermeister (voice) |
| Peter Groeger | - | Professor (voice) |
| Ingeborg Wellmann | - | Micky (voice) (as Inge Wellmann) |
| Beate Tober | - | Dicky (voice) (as Beate Tober-Isfort) |
 | Robert Stadlober | - | Micky (voice) (as Robert Stadlhober) |
| Konrad Bösherz | - | Dicky (voice) |
| Anja Godenschweger | - | Frau Schaller (voice) |
| Helmut Müller-Lankow | - | Onkel Hugo (voice) |
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