| Name | Character | Episodes |
|---|---|---|
| Hugo Egon Balder | Herr Feldmann (voice) | 11 |
| Wolfgang Petry | Self | 1 |
| Robin Gibb | Self | 1 |
| Amanda Lear | Self | 1 |
| Claudia Mori | Self | 1 |
| Kim Wilde | Self | 1 |
| Peter Maffay | Self | 1 |
| Udo Jürgens | Self | 1 |
| Dieter Hallervorden | Self | 1 |
| Nena | Self | 1 |
| Suzi Quatro | Self | 1 |
| Mike Krüger | Self | 1 |
| Helen Schneider | Self | 1 |