Nugget Jack
Andrew Willard
Maj. Randolph McIvor
Dr. Lester Cavigny
Don Adolfo Rivera
Dr. Rhinehart
Charlie Mason
David Thayar
Ed Jamison
Dr. Henry Jordon
Dr. Lane
B.B. Lavish
Prof. Franklin Arnold
Mr. Quandt
Dr. Miller
Sam Wallace
Anthony Lawrence
Prof. Millard Sawtelle
Col. DeBoivin
George Brett
Ralph Morgan
Jan Hanka
John Scott Ryder
Kurt Ingston
Morrison
Dr. Clayton Maxton
Dr. Brady
Alan Rogers
J.P. Morton
Sen. Cummings
Dr. Charles Downer
Producer Walter Blake
Peterson
Judge Joseph M. Williams
Gen. Steele
John Clayton
Timothy Reed Sr.
Colonel Whalen
Stephen F. Austin
Nicholas Torrent
Spiro Gregory
Bill Northcote
Howard Barclay
Kennett
John Hale
Capt. John Carey
Shaw MacAllen
Briggs
Reginald 'Reggie' Odell
Nicholas Pryor
Commander of Paris
Horace Mitchell
John Borden
John R. Flemyng
Yankee General
James Foster / Anderson
Debrulle
Gerald Dexter
District Attorney Carey
Mr. Dean
Leroy Hutchins, War Cloud's Owner
Jim Glenray
Randolph
Paul Kristan
Kenneth S. Rockwell
Roger Classon
Mike Monahan
John Waring
Lt. 'Pop' Roget
Herbert Rosson
Wesley Sinton
Stanley Vane
Dr. Portman
Secretary to President
Henry Loring, Cabot's lawyer
Father
Dr. Richard Czinner
Professor Bhaer
Raymond Wrede
Judge Penfield
J. Gordon Ritchie
Dr. Verney
Li Po Chang
Dr. William MacDonald
Charlie Marsden
Fang Fou Hy
Czar Nicholas II
Captain Geoffrey Maitland
James Crawford
Dr. Sullivan
Freddie Isquith
Barry Kirk
Alex Prentice
Riggs (uncredited)
Edwin Macauley Jr
Raymond Floriot