Col. J.A. Nielson
Capt. Hugh Chesterton 'Bulldog' Drummond
Phyllis Clavering
Algy Longworth
'Tenny' Tennison
Draven Nogais
Gwen Longworth
Hardcastle
Mr. Smith
Nielson's Secretary
Sumio Kanda
Smith Tredgold
Sir John Haxton
Henchman
Cabin Boy
Steward
Ship Captain
Ship Officer
Englishman
Railroad Porter
Older Railroad Conductor
Younger Railroad Conductor
