Grant Withers
Officer Pat O'Hara
Adrian Morris
Officer Sam Maloney
Kay Hughes
Molly Selkirk
Mickey Rentschler
Pinky Adams
Silver Wolf
Irish
Gordon Hart
W.H. Harrison
Frank Lackteen
Mr. Tahata, alias Warner the Great
C. Montague Shaw
Mr. Wellington
Harry Davenport
John P. Adams, inventor
Wheeler Oakman
Stevens, gang chemist
Max Hoffman Jr.
Harry Selkirk
Jack Mulhall
Desk Sergeant
Earl Dwire
Jeremiah Crockett
Leonard Lord
Franklin, the real Tahata
Dick Botiller
Henchman Zutta
Louis Vokali
Henchman / Off-screen Trainer of Silver Wolf
Ernie Adams
Hobo
Hooper Atchley
Casey
Stanley Blystone
Plant Foreman
Richard Cramer
Charlie
Jack Gardner
Intern
Pat Gleason
Blake
William Gould
1925 Police Chief
Al Herman
Hobo Finding Suitcase
Carey Loftin
Pollard Henchman
Tom London
Eddie Lewis
Monte Montague
James Pollard
Charles Murphy
Hobo-Henchman
Eddie Parker
Police Dispatcher / Steel Mill Worker
Henry Roquemore
The Chef
William Royle
Inspector Clark
Tom Steele
Police Car 27 Driver
Frank Sully
Flynn
Ray Teal
Perkins
Harry Tenbrook
Henchman
Jim Toney
Henchman
Florence Wright
Pollard's Secretary