as Oberst Villa (archive footage)
as Zacher(1 ep)
as Guy Leet
as Schepka(1 ep)
as Andreas G. Steinegge(4 eps)
as Dr.Gehse(1 ep)
as Hermann
as Dr. Albeniz
as Carapocco
as Inspektor
as Hirschler
as Marcellin
as Dr. Arnold Vogt(3 eps)
as Clement
as Rechtsanwalt(1 ep)
as Herr Ahlsen(1 ep)
as Mazzini(3 eps)
as Lodovico
as George Statten
as Peers
as Donald Rutley(3 eps)
as Gabriel Robert
as Max Winkler
as Fürst Schaufels(1 ep)
as Advokat Crottat
as Aristopoulos
as Baron Hubert de Sireuil(1 ep)
as Ambassador of Simushir
as Kommissar / Dr. Crépin
as Samuel Breeze
as Kämmerer
as Querini
as Oberst Villa(7 eps)
as Richter(1 ep)
as Philip Anagnos
as Generalleutnant Aratov
as Punalo Alani
as Zehentmeister
as Apollyon
as Seyerlen
as Domenico Aprile
as Älterer Schauspieler
as Stanley Littlefield
as Leminou
as Douglas Talbot(3 eps)
as Signor Chapuys
as Staatsanwalt Griff P. West
as Escovedo
as John Davis
as Mr. Simmons
as Richter(1 ep)
as SA-Standartenführer
as John Lansdale
as Victor
as Dr.Clive
as Sascha Martinoff
as Captain Nikiyan(6 eps)
as Filer
as Ernest Lynton
as Professor
as Janitor Burt
as Protokollführer
as Fouché
as Breinlinger
as Kommissar
as Gen. Nikolai Chapayev
as Herr Fürbringer
as Hans von Hehne
as Cristobal Ramirez
as Frazer
as Radio Announcer (uncredited)
as Dr. Boris Winkler
as Der Staatsanwalt
as Theo
as Pietro
as Gio Manfredi
as Lionel Newman
as Garbin
as Dr. Hornberger
as Valentin Vladek, alias Winter
as Amerikaner in der „Colombo-Bar“