Jano (voice)

Doctor Adolph Müdel

Millburn (1 episode)

Fritz Stiefel

Major Selwyn Davis (6 episodes)

World War One Ace

(12 episodes)

Colonel Melchett (3 episodes)

Edvard Jensen (1 episode)

Mr. Forson

Inspector Klingmann (1 episode)

Self (1 episode)

Various (2 episodes)

Douglas Smedley

(1 episode)

Gabriel Astruc

(1 episode)

Keith Sayle (1 episode)

Douglas Smedley (1 episode)

Keith Sayle

German Major (uncredited)

Harry Day

Schuman (1 episode)

Inspector Grant (1 episode)

(6 episodes)

Major Robert Wheeler

Werner Mannheim

Jones (1 episode)

Marker

(6 episodes)

(1 episode)

(1 episode)

(17 episodes)

Goldman (1 episode)

Sorenson (4 episodes)

Professor Marius (3 episodes)

Peter Jarratt (3 episodes)

Hans Deiter (1 episode)

Caradoc (1 episode)

Holstein (1 episode)

Bergen (1 episode)

Novins

Wilkinson (1 episode)

Richard Massingham (1 episode)

Joachim (13 episodes)

Klaus

Luther (1 episode)

(1 episode)

John Charles Walton (1 episode)

Melchior

Professor Friedrich Bhaer (2 episodes)

Henrik Ibsen

Jim

Sir Adam (1 episode)

Major Harwood (1 episode)

Pilot

(1 episode)

(1 episode)

Leebig

Alan Cooper (1 episode)

(5 episodes)

Tostig (2 episodes)

Walter (1 episode)

Cooper (1 episode)

Ohisson (13 episodes)

(1 episode)

Kinesias (1 episode)

Paul Warner

Forsch (1 episode)

Benson (3 episodes)

Male Receptionist

Vicary (1 episode)

Johann (1 episode)

(7 episodes)

Adolphus Crosbie (6 episodes)

Bernarde (1 episode)

Bequeville (1 episode)

Junior German Officer

2nd German Officer

German Prisoner

Sir Christopher (1 episode)

Koch

Norman Warren