Signor Doppo
Koerner
Professor Koepler
Groote (segment "Final Twist")
Bradfield
'Harelip' Murphy
Samuel Kimber
Italian Official
Mulberry
Smithers
Beau Nash
Chief Crook
Anton Daschomb
Music Hall Manager / O'Reilly
Pope Leo X
Factory Manager
Chief of Police
Dr. Elliot
Signor Doppo (archive footage) (uncredited)