Armitage (1 episode)

Walter

Josef Hartinger

Trent Ikithon (voice) (4 episodes)

Self (1 episode)

David Sharpe (8 episodes)

Jack Cinder

Emperor Javicco Corrino (6 episodes)

Assembly Mage (voice) (1 episode)

Doug Slater

Carmine Falcone (2 episodes)

David Brooke

General Jake Boothe

N

Executive Producer

Holland

Miller

Doctor Thaddeus Sivana (uncredited)

Felix

Eliot Kaplan

Alfred Wolfsohn (voice)

John the Valet

Captain Smith

Daniel Milton (15 episodes)

Ordon (voice) (5 episodes)

Gunnar Sorensson

Dr. Sivana

Werner Heisenberg

Max Easton (8 episodes)

Mark Easton

Merlin

Max Vernon

Rodolfo Vittorio Schmidt

Conor Cruise O'Brien

Captain William D. Stanaforth

Agent Sebastian Graves

Merlin

Stewart Menzies

Dr. Nasch

Nosferatu (1 episode)

Nosferatu

Max Rosenthal

John Washington

Frank Agnew (10 episodes)

Heraclio (voice)

Jacob Sternwood

Narrator (6 episodes)

George

Robert Seymour

Matai Shang

Sultan Amar

Jim Prideaux

Clive Cornell

Sinestro

Henry

(1 episode)

Guern

Andrei Khabarov

Godfrey

Frank D'Amico

Lord Henry Blackwood

Sir John Conroy

Self (1 episode)

Narrator (4 episodes)

Dr. Niel Barnard

Bouhler

Hani

Archy

Finn

Manny Miesel

Nick Caldarelli

(13 episodes)

Septimus

Andy Spader

Self (1 episode)

Pinbacker

Louis

Frank Agnew

Wictred

Pete

Mussawi

Toby Crackit

Sorter

Harry Starks (4 episodes)

Thomas Howard (2 episodes)

Ian

Dad

Arthur

Dr. Tolkin

Len Davies (6 episodes)

Antonio Gabrieli

Doug

Ferdinand

Dusty Miller

Michael Mitcham

Oblonsky (4 episodes)

István Sors

Frank

Terry (4 episodes)

Dave Summers

Father

Brand

Steve

Mr. Knightley

Brand

Col. Brand (1 episode)

Tosker Cox (9 episodes)

Randall (1 episode)

(1 episode)

Kenny

Policeman

Larry Hall (4 episodes)

2nd TV Producer (4 episodes)

Timson

PC Mike Butterworth (1 episode)

(1 episode)

Roger (1 episode)

Telephone Engineer (1 episode)