Michele Oliveri

as Gerd Weidebauer

as Gustavo Di Vicario (2 episodes)

as Ole Pössmann (1 episode)

as Antonello Tievoli

as Roberto Rossi

as Eduardo

as Rudolf Garland (1 episode)

as Manzano

as Kriminaldirektor Ritsos

as Claudio Varese

as Leo Dukakis

as Andrea Rinaldi (1 episode)

as Luigi (6 episodes)

as Gino Pozzo

as Carlo Zeppelini

as Herr Fechner

as Herr Hartmann

as Enzo Bittone

as Leonardo Livantino (1 episode), as Franco Motta (1 episode)

as Lonzo

as Professor Brandstätter (1 episode)

as Makler Argento

as Ciro (voice)

as Roger M. Braun (8 episodes)