| Name | Character | Episodes |
|---|---|---|
| Udo Jürgens | Self | 3 |
| Audrey Landers | Self | 2 |
| Peter Maffay | Self | 2 |
| Jermaine Jackson | Self | 1 |
| Wolfgang Petry | Self | 1 |
| Robin Gibb | Self | 1 |
| Elaine Paige | Self | 1 |
| Donna Summer | Self | 1 |
| Bonnie Tyler | Self | 1 |
| Daliah Lavi | Self | 1 |
| Heino | Self | 1 |
| Margot Hielscher | Self | 1 |
| Bill Ramsey | Self | 1 |
| Hugo Egon Balder | Self | 1 |
| Hugh Masekela | Self | 1 |
| Julian Lennon | Self | 1 |