- Lewis Wilson
- Batman / Bruce Wayne
- Douglas Croft
- Robin / Dick Grayson
- J. Carrol Naish
- Dr. Daka
- Shirley Patterson
- Linda Page
- Frank Austin
- Hotel Clerk
- William Austin
- Alfred Beagle
- William A. Boardway
- Plane Passenger
- Lynton Brent
- Intended Lockwood Pilot
- Roy Bucko
- Barfly
- George Chesebro
- Brennan [Ch. 1-3]
- Dick Curtis
- Agent Croft of Section 50 [Ch. 10-12])
- Jimmy Dime
- Henchman
- Lester Dorr
- Agent on Plane [Ch. 10]
- Kenne Duncan
- Fred - the Mechanic [Ch. 5-6]
- Harry Evans
- Restaurant Patron
- Robert Fiske
- Foster [Ch. 1-4]
- Sam Flint
- Dr. G.H. Borden [Ch. 1]
- Jerry Frank
- Cave of Horrors Thug
- Terry Frost
- Male Nurse [Ch. 7]
- Jack Gardner
- Jim Bramwell
- Gus Glassmire
- Martin Warren
- Karl Hackett
- Wallace
- Earle Hodgins
- Joe
- Mauritz Hugo
- Doctor
- Jack Ingram
- Klein - Henchman
- Warren Jackson
- Bernie
- I. Stanford Jolley
- Brett - Henchman [Ch. 1-2]
- Bob Kane
- Newsboy [Ch. 1]
- Eddie Kane
- J. Hanson
- George J. Lewis
- Burke - Henchman
- Tom London
- Andrews - Henchman
- Sam Lufkin
- Cop
- George Magrill
- Henchman at Sphinx Club
- Knox Manning
- Narrator
- John Maxwell
- Sam Fletcher
- Charles Middleton
- Ken Colton [Ch. 6-8]
- Harold Miller
- Restaurant Patron
- Pat O'Malley
- Cop
- Ted Oliver
- Marshall
- Bud Osborne
- Brown
- Stanley Price
- Henchman Driver [Ch. 1-2]
- Joey Ray
- Henchman
- Cyril Ring
- Restaurant Patron
- George Robotham
- Henchman
- Frank Shannon
- Dr. Hayden
- Harry Tenbrook
- Bartender
- Michael Vallon
- Preston [Ch. 10]
- Anthony Warde
- Stone
- Dan White
- Mover with Pickup Truck
- Blackie Whiteford
- Barfly
- Billy Wilkerson
- Steve [Ch. 8]
- Charles C. Wilson
- Police Capt. Arnold
- Harry Wilson
- Henchman
