Characters played by Bela Lugosi
Prof. Dexter
Characters played by John Carradine
Prof. John Gilmore
Characters played by George Zucco
Ape Man
Characters played by Frank Moran
Ape Man
Characters played by Teala Loring
Anne Gilmore
Characters played by Tod Andrews
Steve Rogers
Characters played by Mary Currier
Mrs. Hilda Gilmore
Characters played by Eddy Chandler
Sergeant
Characters played by Ernie Adams
Tramp
Willie the Weasel
Characters played by Horace B. Carpenter
Theater Watchman
Characters played by Mike Donovan
Policeman Barney
Characters played by George Eldredge
Policeman
Characters played by Frank Leigh
Long Shot