- Gordon Jones
- Brit Reid, aka The Green Hornet
- Keye Luke
- Kato
- Wade Boteler
- Michael Axford
- Cy Kendall
- Monroe
- Anne Nagel
- 'Casey' Case
- Phillip Trent
- Jasper Jenks
- Walter McGrail
- Dean, thug
- Gene Rizzi
- Corey, thug
- Arthur Loft
- Ogden, thug
- John Kelly
- Pete, thug
- Ralph Dunn
- Andy, thug
- Robert Brister
- Jay Lavinson
- Guy Usher
- Lynch
- Jerry Marlowe
- John Roberts
- Frederik Vogeding
- Max Gregory
- John Harmon
- Lefty Bates
- James Blaine
- Mr. Cooper
- Edward Keane
- Williams, bomb thug
- Joe Whitehead
- Editor Dunagan
- Myrtis Crinley
- 'Clicker', photographer
- Stanley Andrews
- Police Commissioner
- Joseph Crehan
- Judge Stanton
- Selmer Jackson
- District Attorney
- Al Hodge
- Green Hornet
