Bernard

Henry Arthur 'Der Hexer' Milton

Arthur Milton

Schiller

Oberinspektor Düwell

I. Offizier Rohlfs

Fürst Ramigani

Eduard Fabricius

Hermann

Maillezais, Unterhändler des Königs

Gravic

Dr. Minxit

Stefan Gorgas

Charly Justin

Wan Tan

Lindford

Dr. Thomas

Prince Ramigani

Major Kazanow

Ludwig van Beethoven

Ernst Jakob Renz

Robert Devoy

Karl Ludwig Faerber

Dr. med. Steininger

Gawan Massi

Dr. Martin Bernhard

Groppi

Onkel Franz

Gaston Thibault

Dr. Diener

Tom Finberg

Captain Percy Forbes, British Chief Agent

Robby Glawar

Lakamba

Lakamba

Sergei Gavrilovitch Schuvalov

Werkstatter Rudi Winkler

Alfredo Codona

Dr. Paul Meinhardt

Student Brutus

Alfredo Capelli

Grenadier Emil Sasse

Olaf Hansen

Jan Karsten

Viktor Hoffmann, Pressephotograph

Frank Olman

Napoleon

Tom Moody

Ludwig van Beethoven

Ivamoura, Youki's brother

Fedor

Nils Ascan

Henry Wickham

Niels Terström

Hannes Hallgarten

Mittelstürmer Werner Fehling

Günther Imhoff

Kapitän Tonning

Matthias Radscheck

Kurt Tromba, Tigerdompteur

Kommissar Dr. Hennings

Kovak

Franciszek Kowalski

Oliver Gant

Kommissar

Ljubomir Jordanow, ihr Freund

Tabaret

Bruno

Leo Trotzki

Professor Marbach

Herbert Sims

Roy Durkin

Paul Sander

Simon

Prince Ramigani

Lakamba

Joe Keller

Förster Knarrtje (voice)

Viktor

Frederico Gomez

Beppo

Robert Torreani

Thomas Dekker Sr. (edited from: Kautschuk) (archive footage) (uncredited)