Main Characters Oliver Welke 40 main appearances Gernot Hassknecht 14 main appearances Lutz van der Horst 14 main appearances Christian Ehring 11 main appearances Birte Schneider 10 main appearances Dietmar Wischmeyer 10 main appearances Fabian Köster 9 main appearances Ulrich von Heesen 8 main appearances Olaf Schubert 8 main appearances Albrecht Humboldt 8 main appearances Dennis Knossalla 7 main appearances Sebastian Pufpaff 7 main appearances Tina Hausten 6 main appearances Carolin Kebekus 6 main appearances Serdar Somuncu 6 main appearances Matthias Matschke 6 main appearances Hazel Brugger 5 main appearances Ralf Kabelka 4 main appearances Dörte Hausten 4 main appearances Carsten van Ryssen 2 main appearances Mandy Hausten 1 main appearances Martin Sonneborn Petra Radetzky Mesut Güngen Claus von Wagner 1 main appearances