| Felix Winterberg is the great-great-grandson of the famous Albert Einstein and himself a recognized physics genius. Because of a deadly hereditary disease, the brilliant researcher only has a few years left - which he wants to make as labor-intensive as possible thanks to various illegal stimulants. |
| Name | Character | Episodes |
|---|---|---|
| Tom Beck | Felix Winterberg | 32 |
| Rolf Kanies | Stefan Tremmel | 32 |
| Annika Ernst | Elena Lange | 32 |
| Angela Roy | Constanze Winterberg | 15 |
| Axel Stein | Thomas Müller | 5 |
| Guido Broscheit | Christian Berkenbusch | 5 |
| Reiner Schöne | Stefan Jäger | 3 |
| Jana Pallaske | Regina Klevens | 2 |
| Stefan Gebelhoff | Frank Lewen | 2 |
| Sylta Fee Wegmann | Saskia | 2 |
| Gizem Emre | Zoe | 1 |
| Suzan Anbeh | Chiara Drossard | 1 |
| Jeanne Goursaud | Lina | 1 |
| Sonja Gerhardt | Interview Partner | 1 |
| Sönke Möhring | Uwe Drossard | 1 |
| Jürgen Rißmann | Musical Producer | 1 |
| Alexander Schubert | Marc Hertel | 1 |
| Mimi Fiedler | Cassandra von Hohenstein | 1 |
| Milton Welsh | Michael Neerpasch | 1 |
| Tina Ruland | Sigrun Köhler | 1 |
| Sabine Vitua | Anna Zempel | 1 |
| Nicole Ansari-Cox | Elke Reinhart | 1 |
| Piet Fuchs | Waldemar Ott | 1 |
| Bela B. | Martin Stude | 1 |
| Christoph Drobig | IT Expert | 1 |
| Tom Gerhardt | Treptekes | 1 |
| Hansa Czypionka | Thomas Wittek | 1 |
| Joyce Ilg | Nana | 1 |
| Marko Dyrlich | Gregor Wisnewski | 1 |
| Maike Jüttendonk | Saskia Saalfeld | 1 |
| Martina Schöne-Radunski | Claudia Friedel | 1 |
| Lucas Prisor | Ludwig von Hohenstein | 1 |
| Gerdy Zint | Auge Hansen | 1 |
| Laila Maria Witt | Hohenneuner | 1 |
| Axel Moustache | Georgi Kolarow | 1 |
| Tim Morten Uhlenbrock | Stefan Pachmayer | 1 |
| Tim Oliver Schultz | Lutz Heineking | 1 |
| Michael Lott | Bank Robber #2 | 1 |
| Phil Laude | Crazy Alex | 1 |
| Tanja Schleiff | Sabine Kampmann | 1 |
| Carolina Vera | Ofenhitzer | 1 |