Baron Boris von Frankenstein (voice)
Boris Karloff
Felix Flankin / Yetch / Dracula / Invisible Man / Dr. Jekyll / Mr. Hyde / Additional Voices
Allen Swift
Francesca (voice)
Gale Garnett
The Monster's Mate (voice)
Phyllis Diller
Title Song Singer (voice)
Ethel Ennis
Songs
Maury Laws
Music
Executive Producer
Joseph E. Levine
Cinematography
Tadahito Mochinaga
Story
Arthur Rankin, Jr.
Producer
Director
Jules Bass
Lyricist
Writer
Forrest J. Ackerman
Len Korobkin
Harvey Kurtzman
Associate Producer
Larry Roemer
Assistant Director
Kizo Nagashima
Character Designer
Jack Davis
Choreographer
Killer Joe Piro