Martin Gruber

as Dr. Martin Loibl (12 episodes)

as Matthias Fink (20 episodes)

as Maik Zerrlinger (1 episode)

as Hannes (1 episode)

as Dr. Andreas Kratzke (1 episode)

as Riley Owen

as Marcus

as Toni Seidl

as Self (2 episodes)

as Erwin Meyer (1 episode)

as Mark Jansen (1 episode)

as Der mit der Rakete

as Gero Meinerzhagen (1 episode)

as Theo Koschwitz (1 episode)

as Bernd Harms (1 episode)

as Daniel Kessler

as Dominik van Bargen (1 episode)

as Dr. Till Achner (2 episodes)

as Self (1 episode)

as Ronald Schönauer

as Andreas Marthaler (38 episodes)

as Self (1 episode)

as Max Leitner (1 episode), as Max Herzog (56 episodes)

as Felix Saalfeld (211 episodes), as Felix Tarrasch (703 episodes)

as Markus