The Villainous Stage Manager

An Office Clerk

James, the Head Waiter

Commander of Invading Army

Pfaff

Count Fosco

Mysterious Girl's Former Employer

Grossbeck Upham

Mr. Wilmot

Helen's Father

Burgomaster (as A. Bower)

The Ostrich Feather Importer

John D. Gray - Watson's Boss

The Retired Trader

The Nymph's Uncle

Major Dennison (Sylvia's uncle)

Maxon

Lawyer Wakem

Mark Millions - Millionaire

Pfaff - a German Agent

Mr. Brown, Pat's Employer

Tom Andrews

Gen. Darrington