Tom Kennedy
Tom
Monte Collins
Monte
Phyllis Crane
Miss Millstone (uncredited)
?
Val Duran
Dr. Wong (uncredited)
?
Eddie Lee
Chinese Henchman (uncredited)
James B. Leong
Chinese Man (uncredited)
Jack 'Tiny' Lipson
The Monster (uncredited)
Wilfred Lucas
Professor Edwin Millstone (uncredited)
Sam Lufkin
Cop (uncredited)
Harry Semels
Dr. Wong (uncredited)