Peter van Eyck
Maj. Bob Anders
O.E. Hasse
Prof. Larsen
Yvonne Furneaux
Gilda Larsen
Walter Rilla
Prof. Pohland
Ernst Schröder
Chefarzt
Dieter Eppler
Kaspar
Wolfgang Preiss
Dr. Mabuse
Rika Dialyna
Judy
Robert Beatty
Col. Matson
Valéry Inkijinoff
Dr. Krishna
Claudio Gora
Direktor Botani / Dr. Mabuse
Gustavo Rojo
Mario Monta
Massimo Pietrobon
Jason Monta
Charles Fawcett
Cmdr. Adams
Erich Koltschack
Lutto
Feodor Chaliapin Jr.
Apotheker
Leo Genn
Adm. Quency
Yoko Tani
Mercedes
Renate Danz
Mercedes (voice)
Erich Fiedler
Direktor Botani (voice)
Heinz Giese
Col. Matson (voice)
Reinhard Kolldehoff
Lotus (voice)
Arnold Marquis
Adm. Quency (voice)
Gerd Martienzen
Mario Monta (voice)
Joachim Nottke
Dr. Mabuse (voice)
Friedrich Schoenfelder
Jason Monta (voice)
Siegfried Schürenberg
Cmdr. Adams (voice)
Fritz Tillmann
Dr. Krishna (voice)
Alexander Welbat
Kaspar (voice)