Carmine
Silver Haired Man
Himself
American Bob
Braddock
Chief Hannigan
Mr. White (voice)
Tulley Sr.
Judge Mancini
Dick Lecter
Baxter Cain
Ron Fairfax
Walter Denkins
Adam Spring
Agent Silvestri
Chief MacIntyre
Senator Zachary Powell
Vince Baxter
Prof. Michaels
Uncle Andre
Senator Dougherty
The Devil
Dennis Forbes
Edward Bolt
Isaac Arnold (voice)
Mr. X
Mr. Morris
Wedgewood
Commissioner Peter Kinghorn
Dr. Duncan
Lord Byron Orlock
Wolfgang Manteuffel
Dr. Gary Julian
Max Owens
Colonel Masters
Adolf Hitler
Eduard Delacorte
Dr. Fred Brown
Colonel Schneider
Lawson
Ray Melton
Sheriff John Whaley
Gen. Woodbridge
Stanley Auerbach
Franklin Delano Roosevelt
Ed Ryland
Captain Powell
Oliver Coles
Dr. Emil Kovač
Ross Webster
Dave Fairmont
Field Marshal Milch
Frederick Walker
Richard Whitney
Girard
David Blackman
Gordon Cain
Senator Barkley
Harrison Crawford III
Mark Case
Dr. Arno Franken
Michael Jacoby
Dr. Neal
Col. Donald Rogers
Sen. Gerald Stratton
Franklin Delano Roosevelt
Glen Manning
Prof. Allan Duncan
Proteus IV (voice) (uncredited)
Edward Fuller
Tony
Stuart Chase
Senator Parker
Jerry Hunter
Neilson
Ray Whiteley
Dr. Bergen
Servilius Casca
Maj. Paul Krueger
Antonio, Photographer
Walter Chalmers
Napoleon Solo
Napoleon Solo
Self (archive footage)
Napoleon Solo
Napoleon Solo
Bill Fenner
Napoleon Solo
Napoleon Solo
Cameo Guest Star
Napoleon Solo
Napoleon Solo
Jim Melford
Klaus Everard
Chester A. 'Chet' Gwynn
Eddie 'The Kid' Campbell
Don Bigelow
The Symbol Maker's Teenage Son
Buddy Root
Bob Ford
Spearman / Hebrew at Golden Calf