- Douglas Haig - Buddy Lee (uncredited)
- Edgar Kennedy - SFPD Desk Sergeant (uncredited)
- Tetsu Komai - Florist Henchman (uncredited)
- James B. Leong - Florist Henchman / High Priest (uncredited)
- James Pier Mason - Barry Steele / Dick the Dude (uncredited)
- Nelson McDowell - 1st Train Passenger (uncredited)
- James Wang - Dr. Chang Gow (uncredited)
- Blue Washington - Thorne's Henchman (uncredited)
- Leo Willis - Cop (uncredited)
- Malcolm St. Clair
- Gaylord Lloyd
- Harold Lloyd
- Paul Gerard Smith
- James H. Anderson
- Harold Lloyd
Harold Lloyd interpreta a Harold Bledsoe en la película.
Barbara Kent hace el papel de Billie Lee.
Noah Young interpreta a Patrick Clancy SFPD en la película.
Charles Middleton hace el papel de John Thorne / The Dragon.
Will Walling hace el papel de Captain Walton, SFPD 3rd Div..
Grady Sutton hace el papel de Man at Party (silent version) (scenes deleted).
Brooks Benedict interpreta a Handcuffed Prisoner at Police Station (uncredited) en la película.
Eddy Chandler hace el papel de Cop (uncredited).
Rae Daggett hace el papel de Woman Sitting in Police Station (uncredited).
Douglas Haig interpreta a Buddy Lee (uncredited) en la película.
Edgar Kennedy hace el papel de SFPD Desk Sergeant (uncredited).
Tetsu Komai interpreta a Florist Henchman (uncredited) en la película.
James B. Leong hace el papel de Florist Henchman / High Priest (uncredited).
James Pier Mason interpreta a Barry Steele / Dick the Dude (uncredited) en la película.
Nelson McDowell hace el papel de 1st Train Passenger (uncredited).
James Wang interpreta a Dr. Chang Gow (uncredited) en la película.
Blue Washington interpreta a Thorne's Henchman (uncredited) en la película.
Leo Willis interpreta a Cop (uncredited) en la película.
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