Russell Hayden
Rod Stanton
Jane Adams
Marjorie Elmore
Lionel Atwill
Sir Eric Hazarias
John Eldredge
Doctor Elmore
John Gallaudet
Professor Grebb
Dick Curtis
Henchman Johnson
George Lynn
Henchman Marlow
Gene Roth
Police Captain Hammond
John Miljan
Doctor Gaffron
Ralph Lewis
Kurtz, gang radioman
Arthur Space
"System" Reeves
Sam Flint
Chairman of the Peace Foundation
George Eldredge
Bowen, Peace Foundation Member
Wheaton Chambers
Peace Foundation Member #2
Mauritz Hugo
Peace Foundation Member #3
Cyril Delevanti
Representative to the Peace Foundation [Ch.1]
Frank Lackteen
The Blind Beggar [Chs. 4-5, 7, 10-12]
Clarence Lung
Chief Tonga [Chs. 11-12]
