| Name | Character | Episodes |
|---|---|---|
| Filip Peeters | Martin Grossmann | 13 |
| Eva Habermann | Lena Heitmann | 9 |
| Birgit Stauber | Christina 'Chris' Rabe | 9 |
| Nina Hagen | Umberta | 1 |
| Udo Schenk | Dr. Rainer Opitz | 1 |
| Jürgen Tonkel | Martin Dannberg | 1 |
| Torben Liebrecht | Edgar | 1 |
| Luca Zamperoni | Dr. Ansgar Weigel | 1 |
| Jennifer Ulrich | Rica Mell | 1 |
| Mathis Landwehr | Erster Schläger | 1 |
| Manuel Cortez | Thorsten Wildfeuer | 1 |
| Jale Arıkan | Dr. Ariane Foster | 1 |
| Tyron Ricketts | Alain Coulais | 1 |
| Steffen Münster | Bohning | 1 |