Welcome Danger

Harold Lloyd

Harold Bledsoe

Barbara Kent

Billie Lee

Noah Young

Patrick Clancy SFPD

Charles Middleton

John Thorne / The Dragon

Will Walling

Captain Walton, SFPD 3rd Div.

Grady Sutton

Man at Party (silent version) (scenes deleted)

Brooks Benedict

Handcuffed Prisoner at Police Station (uncredited)

Eddy Chandler

Cop (uncredited)

Rae Daggett

Woman Sitting in Police Station (uncredited)

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)