Großvater (26 episodes)
Schiller
Tabaret
Paul Sander
Leo Trotzki
Heinz Lansky (1 episode)
Robert Seipold (6 episodes)
Dr. Minxit
Richard Jacobs (1 episode)
Kuno Pannewitz (1 episode)
Philip Cooper (3 episodes)
Ljubomir Jordanow, ihr Freund
Self - Contestant (1 episode)
Professor Marbach
Onkel Franz
Herbert Sims
Wan Tan
Dr. Diener
Dr. Martin Bernhard
Joe Keller
Arthur Milton
Kommissar
Henry Arthur 'Der Hexer' Milton
Roy Durkin
Kriminalkommissar Wagner (1 episode)
Kriminalinspektor Bracht (1 episode)
Tom Moody
Frederico Gomez
Oliver Gant
Franciszek Kowalski
Prince Ramigani
Fürst Ramigani
Prince Ramigani
Napoleon
Hermann
Charly Justin
Gravic
Alfredo Capelli
Eduard Fabricius
Gawan Massi
Nils Ascan
Lakamba
Lakamba
Major Kazanow
Förster Knarrtje (voice)
Kommissar Dr. Hennings
Dr. med. Steininger
Robert Torreani
Günther Imhoff
Frank Olman
Stefan Gorgas
Kurt Tromba, Tigerdompteur
Thomas Dekker Sr. (edited from: Kautschuk) (archive footage) (uncredited)
Ludwig van Beethoven
Matthias Radscheck
Viktor Hoffmann, Pressephotograph
Dr. Thomas
Kapitän Tonning
Ernst Jakob Renz
Ludwig van Beethoven
Oberinspektor Düwell
Dr. Paul Meinhardt
Captain Percy Forbes, British Chief Agent
Mittelstürmer Werner Fehling
Student Brutus
Hannes Hallgarten
Robert Devoy
Alfredo Codona
Karl Ludwig Faerber
Tom Finberg
Gaston Thibault
Niels Terström
Jan Karsten
Henry Wickham
Olaf Hansen
Werkstatter Rudi Winkler
Robby Glawar
Grenadier Emil Sasse
Ivamoura, Youki's brother
Sergei Gavrilovitch Schuvalov
I. Offizier Rohlfs
Maillezais, Unterhändler des Königs