Dr. Jekyll / Mr. Hyde
David Hampton
Achmet Zek
Wanakee
The Spider
Don Alfonso
Dr. Scarely
Robert Earlton
Single Tooth Wilson
Matt Daley
Jacob Feldman
Piet Kroon
Legar, The Iron Claw
Count Sergius Dardinilis
Lawyer Hawkins
J. W. Dolson
Ratburn
Jules
Bartender
The spy
Jacques Frochard
George Harmon
Herman Bennett
Serpent Smith
District Attorney
Hiram Judd
Flint Bastille
Maj. Mike Connel
Giovanni
Witchdoctor
Roger Barclay
The Thing
Albert Edward Sassoon
Bull McLeod
McEwen
Capt. Drake
Drexel Draig
Mulatto Mike
Uncle Nicholas Welby
'Breed'
Gentleman of Rome (uncredited)
Ivor Johnson
Pugin
Perry Bennett / The Clutching Hand
Boris Kosloff
Charles Cramp
White Cloud