- Warren Hull
- Richard Wentworth / The Spider / Blinky McQuade
- Iris Meredith
- Nita Van Sloan
- Richard Fiske
- Jackson
- Kenne Duncan
- Ram Singh
- Forbes Murray
- Police Commissioner Stanley Kirk
- Donald Douglas
- Jenkins - the Butler
- Marc Lawrence
- Steve Harmon
- Charles C. Wilson
- Chase
- John Tyrrell
- Grafton - Henchman
- Eugene Anderson Jr.
- Johnnie Sands
- Ann Doran
- Mason's Secretary
- Paul Whitney
- Gray - the Banker
- Beatrice Curtis
- Kate Sands
- Gordon Hart
- J. Mason
- Byron Foulger
- Allen Roberts
- Ernie Alexander
- Reporter
- Brooks Benedict
- Steve's Driver
- Jack Gardner
- Reporter
- John Roy
- Police Lab Chemist
- Ernie Adams
- Merkel
- Fred Aldrich
- Guard
- Sam Ash
- Dover
- Walter Bacon
- Mechanic
- Harry A. Bailey
- Dr. Gaylord
- Al Bain
- Bar Patron
- Jimmie Baker
- Powerhouse Worker
- Arthur Berkeley
- Audience Member
- Harry Bernard
- Watchman
- Beatrice Blinn
- Adams' Stenographer
- Gloria Blondell
- Chase's Secretary
- Roy Brent
- Ted
- Ralph Brooks
- Chambers
- Frank Bruno
- Monk
- Buel Bryant
- Cop at Airport
- Earle D. Bunn
- Henchman
- Lew Caits
- Blade
- James Carlisle
- Fire Captain
- Lane Chandler
- Trigger
- Steve Clark
- Masked Henchman
- Edmund Cobb
- Police Dispatcher
- Bing Conley
- Henchman
- Harry Cornell
- Brownie
- Kernan Cripps
- Officer Mulvaney
- Dick Curtis
- Malloy
- Jack Curtis
- Henchman
- Russell Custer
- Policeman
- Sidney D'Albrook
- Spike #2
- Lew Davis
- Harry Stone
- George DeNormand
- Henchman with Steve [Chs. 5-6] / Skylight Henchman (uncredited)
- Harry Depp
- Oswald
- Dick Dickinson
- Bus Ticket Customer
- Charles Dorety
- Mort
- Lester Dorr
- Frank Martin
- Curley Dresden
- Henchman Driver
- Art Dupuis
- Radio Operator
- Dick Durrell
- Charlie Dennis
- Edward Earle
- J.R. Adams
- Carl Faulkner
- Cop
- Al Ferguson
- Gang Garage Mechanic
- Eddie Fetherston
- Tom
- Bess Flowers
- Myrtle
- Eddie Foster
- Lefty
- Jerry Frank
- Henchman with Malean
- Bill Gavier
- Louis
- Bud Geary
- Henchman with Steve
- Roger Gray
- Henchman
- Kit Guard
- Henchman
- Charles Haefeli
- Henchman
- Frank Hagney
- Henchman
- Chuck Hamilton
- Gorman
- Jack Harvey
- Marvin
- Edward Hearn
- Police Desk Sergeant
- Oscar 'Dutch' Hendrian
- Henchman with Whitey
- Jack Hennessy
- Chauffeur #2
- Al Herman
- Spike Malean
- Ben Hewlett
- Joseph Crane
- George Hoey
- Henchman
- Harry Hollingsworth
- Police Inspector
- Reed Howes
- Henchman
- Russell Huestis
- James
- Michael Jeffers
- Henchman
- Dick Jensen
- Henchman
- Jerry Jerome
- Sparks
- Ray Johnson
- Henchman
- Al Klein
- Saber
- Bob Kortman
- Henchman-Mechanic
- Edward LeSaint
- Doctor
- Tom London
- Cop in Bank
- Jack Low
- Henchman
- Sam Lufkin
- Henchman
- Chet Lynn
- Jim
- Stanley Mack
- Gunman in Bank
- George Magrill
- Policeman
- Herman Marks
- Henchman
- Bud Marshall
- Police Dispatcher
- Ed McCabe
- Steve
- Ralph McCullough
- Driver
- Charles McMurphy
- Cop
- Malcolm 'Bud' McTaggart
- Elevator Boy
- Lew Meehan
- Burke
- Tony Merlo
- Chauffeur
- Frank Mills
- Henchman
- Bruce Mitchell
- Cop
- King Mojave
- Mike
- Harry Myers
- Detective
- Wedgwood Nowell
- Allen
- Frank O'Connor
- Policeman
- Nestor Paiva
- Red
- Joe Palma
- Henchman with Steve
- Bill Patton
- Henchman with Whitey
- Claude Payton
- Radarez
- Edward Peil Sr.
- Officer Jones
- Jack Perrin
- Interne
- Bob Perry
- Tim Spencer
- Jessie Perry
- Bus Station Woman
- Charles Phillips
- Henchman
- Rose Plumer
- Bus Terminal Woman
- Lee Prather
- Morris
- Ed Randolph
- Powerhouse Worker
- Gus Reed
- Frank
- Al Rhein
- Henchman
- Jack Richardson
- Policeman
- Cyril Ring
- Henry Blake
- Anne Schaefer
- Bus Station Woman
- Ed Schaefer
- Policeman
- Cy Schindell
- Cadman
- Dick Scott
- Joe
- Harry Semels
- Henchman with Steve on Bus
- Cap Severn
- Farmer's Woman
- Charles Sherlock
- Detective
- Ernest Shields
- Passenger
- Lee Shumway
- Police Sergeant
- Reginald Simpson
- Gordon
- John Sinclair
- Writer
- Ray Spiker
- Henchman
- Dick Stanley
- Henchman with Steve
- Tom Steele
- Bank Gunman
- Larry Steers
- Businessman
- Walter Stiritz
- Henchman
- Gene Stone
- Cashman
- Harry Strang
- Henchman with Whitey
- Joe Sully
- Henchman
- George Taylor
- Whitey
- Henry Taylor
- Wilson
- Harry Tenbrook
- Powerhouse Worker
- Dirk Thane
- Henchman
- Victor Travis
- Benefit Director
- George Turner
- Henchman with Trigger
- Francis Walker
- Farmer
- Larry Wheat
- Carter
- Roger Williams
- Steve's Driver
- Dan Wolheim
- Barkeeper
- William Worthington
- Cantlon
- Duke York
- Henchman
- Bert Young
- Henchman with Grafton
