Editor
Barnaby
Forbes (uncredited)
Musician (uncredited)
Reporter (uncredited)
Detective Gannett
Alfred
Spectator
Inquisitive Stranger
Mr. Martingale
Bob's Butler (uncredited)
Constable Holly
Sneed, Hammle's Butler (Uncredited)
Salesman
Arthur Summers
Trelawney Redfern
Clerk in Chase's office
Englishman at Party (uncredited)
Cyril Glossop
Gryphon
Duke of Cleves
Wilberforce Strangeways
Ollie's Hospital Roommate
Richard Bentinck
Jellicott
Lord Eustace
Basil Pistol
James Raleigh
Sylvester Wadsworth
Partygoer ('Impulses') (uncredited)
Mr. Poffley
Jasper Hickson
Lord Wrench
Prof. Percy Willow
Mr. Z
Sylvester Wadsworth
Percy Penfield
Aubrey Weems
Percy Jones
Engineer
Dr. Eustace Gill
Raymond of Boston
George Bagnall
Mr. Spangle PhD.
Det. Hall
Algy
Lord Tarbotham
Monty Montgomery
Louis Carruthers
Alfred Wimbledon
Harold Crosby, cub reporter
Andre's Assistant
Eric Lancefield
Henry Fuller
Arthur Rockmere
Dal Brown
Gerly - The Valet
Theodore Van Felt
Dr. Harry Oldershaw
George Sears
Lord Allan Harrowby
Mr. Belknap-Jackson
Reggie
Wilbur
Peter Carter
Reggie Barrett