| Name | Character | Episodes |
|---|---|---|
| Tim Seyfi | Manfred Petersen | 5 |
| Jürgen Tonkel | Kai Döring | 5 |
| Matthias Koeberlin | Robert Marthaler | 5 |
| Stipe Erceg | Ludwig Slama | 2 |
| Hannes Hellmann | Professor Wagenknecht | 1 |
| Kirsten Block | Frau Urban | 1 |
| Florian Panzner | Raimund Toller | 1 |
| Florian Panzner | Polizist | 1 |
| Roman Knižka | Oliver Frantisek | 1 |
| Andreas Pietschmann | Steinwachs | 1 |
| Michaela Caspar | Frau Wagenknecht | 1 |
| Gustav Peter Wöhler | Anwalt | 1 |
| Ella-June Henrard | Manon Schumann | 1 |
| Alice Dwyer | Sarah Jonas | 1 |
| Hans Peter Hallwachs | Johann von Münzenberg | 1 |
| Heinz Lieven | Dr. Horst Niehoff | 1 |
| Ludwig Trepte | Daniel Fichtner | 1 |
| Oliver Bröcker | Freund | 1 |
| Detlef Bothe | Hegemann | 1 |
| Wilfried Hochholdinger | Dr. Magnus Sammer | 1 |
| Milton Welsh | Kevin Möller | 1 |
| Udo Schenk | Hubert Orthmann | 1 |
| André Hennicke | Axel Rotteck | 1 |
| Alexander Scheer | Jörg Gessner | 1 |
| Anna Brüggemann | Braut | 1 |
| Ivan Shvedoff | Stipe Pavlic | 1 |
| Adriana Altaras | Rektorin | 1 |
| Bernhard Schütz | 1 | |
| Rüdiger Vogler | Philipp Lichtenberg | 1 |
| Andreas Schmidt-Schaller | Brautvater | 1 |
| Bernadette Heerwagen | Kerstin Henschel | 1 |
| Jale Arıkan | Tankstellenbesitzerin Gazetti | 1 |
| Siemen Rühaak | Nick | 1 |
| Markus Knüfken | Erich | 1 |
| Anne Kanis | Sandra Gessner | 1 |
| Michael Pink | Jonathan Berg | 1 |
| Husam Chadat | Dr. Tauss | 1 |
| Uwe Preuss | Professor Hirschberg | 1 |
| Michael Mendl | Traugott Köhler | 1 |
| Yevgeni Sitokhin | Goran Katlic | 1 |
| Götz Schubert | Udo Klotz | 1 |