| Name | Character | Episodes |
|---|---|---|
| Katharina Müller-Elmau | Sally Piontek | 6 |
| Rahul Chakraborty | Lumme Singh | 6 |
| Tim Seyfi | Dieter Maschmann | 1 |
| Ella-Maria Gollmer | Maja Waldmann | 1 |
| Xenia Assenza | Jana Kanold | 1 |
| Dennis Mojen | Richard Wohlleben | 1 |
| Johann von Bülow | Gustav Prinz zu Rebensburg | 1 |
| Marleen Lohse | Elaine Kleinmann | 1 |
| Sabine Vitua | Bibi Sonderberg | 1 |
| Heio von Stetten | Robert Waldmann | 1 |
| Michael Grimm | Luitpold Moosgruber | 1 |
| Jochen Horst | Prof. Erwin Kanold | 1 |
| Klaus Stiglmeier | Andreas | 1 |
| Carlo Ljubek | Richi Wurmser | 1 |