| Name | Character | Episodes |
|---|---|---|
| Maxim Mehmet | Henk Cassens | 17 |
| Tina Pfurr | Melanie Harms | 10 |
| Florian Lukas | Jens Jensen | 5 |
| Tayfun Bademsoy | Günesh Özlügül | 2 |
| Birge Schade | Frida van Wieren | 1 |
| Luise Heyer | Britta Schütte | 1 |
| Dirk Martens | Dr. Mark Lehsoll | 1 |
| Florian Panzner | Luke | 1 |
| Roman Knižka | Thomas Däger | 1 |
| David Bredin | Oliver Ahlers | 1 |
| Julia Jäger | Sabine Freese | 1 |
| Aljoscha Stadelmann | Hinnerk Schwidden | 1 |
| Marc Rissmann | Thorsten | 1 |
| Oliver Bröcker | Mattes Berger | 1 |
| Katja Studt | Ulrike Willert | 1 |
| Beat Marti | Scholz | 1 |
| Jürgen Rißmann | Tjalv Riefenberg | 1 |
| Steffen Jürgens | Claas Lindberg | 1 |
| Susanna Simon | Marlies Jell | 1 |
| Alexander Beyer | Hanno Schlüter | 1 |
| Daniela Schulz | Karen Schröter | 1 |
| Rafael Gareisen | Luis Krull | 1 |
| Dennenesch Zoudé | Ellen Struve | 1 |
| Stefan Konarske | Lars Röding | 1 |
| Kristin Suckow | Julia Waller | 1 |
| Julia Brendler | Esther Fehrmansen | 1 |
| Annika Ernst | Paulina Kempf | 1 |
| Caroline Erikson | Tina Redenius | 1 |
| Florian Schmidtke | Torsten Otto | 1 |
| Christian Näthe | Jonas Ricklefs | 1 |
| André Jung | Rune Bilstedt | 1 |
| Jürgen Heinrich | Harke Mensen | 1 |
| Friederike Linke | Jessica Heulinger | 1 |
| Tyron Ricketts | Dr. Leon Steenhuus | 1 |
| Eva Meckbach | Muriel Danneberg | 1 |
| Mike Hoffmann | Erik Thomsen | 1 |
| Michael Pink | Gerald Boje | 1 |
| Dirk Borchardt | Oliver Borchers | 1 |
| Artjom Gilz | Lukas Wilken | 1 |
| Jean-Luc Bubert | Tim Petersen | 1 |
| Michael Schumacher | Pit | 1 |
| Heikko Deutschmann | Raimund Vastenauer | 1 |
| Gabriele Schulze | Frau Fokken | 1 |
| Franziska Weisz | Elke Heseding | 1 |
| Götz Schubert | Torben Martmann | 1 |
| Florian Stetter | Klaus Holsten | 1 |
| Peter Jordan | Detlef Ackermann | 1 |
| Wolfgang Pregler | Professor Bertram | 1 |
| Andreas Guenther | Aiko Möldenbrok | 1 |
| Sonsee Neu | Elisabeth Veith | 1 |
| Mignon Remé | Sabine Gronewold | 1 |
| Andy Gätjen | Cousin Onna | 1 |
| Johanna Gastdorf | Marie Frerichs | 1 |
| Tim Wilde | Günther Bloom | 1 |