Christoph M. Ohrt

as Kalle

as Dr. Volker Niebling

as Self (2 episodes)

as Edo Harnischmacher (1 episode)

as Karl Leitner (2 episodes)

as Nico Körner

as Dieter Burchart

as Herb

as Fürst Fugger

as Klaus

as Self (1 episode)

as Wieland Kohn (1 episode), as Wieland Krohn (2 episodes)

as Self (1 episode)

as Michael

as Self (1 episode)

as Michael Brücker

as Tommy

as Christian

as Self (1 episode)

as Claussen

as Christian Bauer

as Georg Sänger

as Dr. Michael Castell

as Jan Steinmann (2 episodes)