Dr. Xavier (archive footage)
Inspector Holtz
Arntz, Police Officer (archive footage)
Latimer Marsh / The Cobra
Sir Eric Hazarias
Police Inspector Holtz
Pat Coyle
Alec Ritchfield
Inspector Arnz
Waterlow
Erich von Rugen, alias Alex Morel
Charles Finch
Cyrus Maldor
Mayor of Vasaria
Professor Moriarty
Dr. King
The Baron
Teutonic Gentleman
Varnoff
The Baron
Dr. Bohmer
Rawitch
Dr. Ralph Benson, posing as Graham
Dr. Paul Rigas
Dr. Bruce
Harry Compton
Russell aka Henry Woodruff
Dr. Suderman
Jim McLaughlin
Cliveden Compton
General Bazaine
Professor Marakov
Paul Messenger
Prof. Roger Chauncey Hildebrand
Hugo Zurof
Walter Stevens
Dr. James Mortimer
De Rochefort
Inspector Krogh
Count Anton 'Tony' Hohenfried
Breuer
M. Beaumarchais
Mike Roberts
Col. Fenwick
Maj. Gen. Sir John Sangye
Col. Vigo
Prosecutor
Gerald A. Axton
Mr. Stephen Whittaker
Colonel Bishop
Maj. William Brennan
Captain Cole
Capt. Don Pasqual 'Pasqualito' Costelar
Inspector Neumann
Henry Dumont
John Pointer
Julius Beaufort
Brough
Herr Von Sturm
John 'Flint' Dawson aka John Daniels
Colonel André Muffat
Inspector Wallace
Robert von Helldorf
Baron von Merzbach
Jerome Breen
Eric Gorman
Ivan Igor
Aubrey St. John
Dr. Otto von Niemann
Dr. Jerry Xavier
Sir Austin Howard
The Surgeon
Kenneth Gordon
Courtenay Urquhart