as Dr. Mark Sorell(2 eps)
as Patrick Reitwald
as Markus
as Wolfgang Breitsamer(2 eps)
as Stefan Mellau
as Matthias
as Moritz Aschbach
as Leo Attinger(1 ep)
as Tom
as Norbert Bachler
as Ulrich Henke
as self(1 ep)
as Professor Gruber
as Peter
as Self(2 eps)
as Dr. Wedekind
as Barney Brunner
as Alexander Keller
as Stefan Ramin
as Holbrecht(1 ep)
as Johannes Güttler
as Harald Neuhauser(33 eps)
as Adrian(1 ep)
as Thomas Lichter(1 ep)
as Self(1 ep)
as Georg Zübert
as Werner Heimkens(1 ep)
as Lukas Finke
as Thomas Kettner
as Jonas Elmer
as Felix Amstätter(1 ep)
as Paul Moosbacher(2 eps)
as Matt Welby / Mattias Welbinger
as Theo Simon
as Konrad Baumann(1 ep)
as Roland Hinrichsen(1 ep)
as Peter Schönherr(1 ep)
as Christoph Olson(3 eps)
as Simon Katzer
as Piet Knudsen(1 ep)
as Thomas Reuther(10 eps)
as Jürgen Volkmar(1 ep)
as Michael Stellmann(1 ep)
as Hans
as Günther Ehrmann(1 ep)
as Bernd Schmitz(1 ep)
as Walter Maiberger(1 ep)
as Michi
as Nico Bresnach(1 ep)
as Holger Pietsch(1 ep)
as Koberwein(1 ep)
as Arne Schlink
as Dirk Marx
as Roland Althofer(114 eps)
as Christoph Heierdinger(1 ep)
as Self(8 eps)
as Thomas Bernreitner
as Tim Köhler(1 ep)
as Self(1 ep)
as Knud Hinz(1 ep)
as Daniel Niedersen(1 ep)
as Self(1 ep)
as Fred(1 ep)
as Richard Schuhmann(1 ep)
as Christopher Mahler(1 ep)
as Heiko Ritter(1 ep)
as Gert Marks(1 ep)
as Henry Kubsch(1 ep)
as Self(1 ep)
as Simon Jentsch(1 ep)
as Uwe Ebeling(1 ep)
as Christian Meisner(1 ep)
as Tobby(1 ep)
as Fred Jacoby(1 ep)
as Volker Kresnik(1 ep)
as Roland Bluhm(1 ep)
as Hans Aicher(1 ep)
as Hanns Sonnleitner(1 ep)
as Press Officer(1 ep)