| Credited cast: |
 | Stefan Brönneke | - | Peter "Tim" Carsten (voice) |
| Cora Sabrina Grimm | - | Gabriele "Gaby" Glockner (voice) |
 | Enno Hesse | - | Willi "Klößchen" Sauerlich (voice) |
| Rest of cast listed alphabetically: |
| Monty Arnold | - | Herr Peper (voice) |
 | Eckart Dux | - | Direktor Thomsen (voice) |
| Gerhard Garbers | - | Erzähler (voice) |
| Rolf Julien | - | Herr Riccio (voice) |
| Marianne Kehlau | - | Frau Sommer (voice) |
| Henry Kielmann | - | Prof. Vierstein (voice) |
| Tim Knauer | - | Karl Vierstein (voice) |
 | Günter Lüdke | - | Robert Brodonski (voice) |
| Holger Mahlich | - | Kommissar Glockner (voice) |
| Stephan Meyer-Kohlhoff | - | (voice) |
| Svenja Pages | - | Dr. Svenja Ackerström (voice) |
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