Dr. Orloff's Monster

Hugo Blanco

Andros

Agnès Spaak

Melissa

Perla Cristal

Rosa

Magda Maldonado

Amira (as Magda MacDonald)

Marcelo Arroita-Jáuregui

Dr. Conrad Jekyll

Pepe Rubio

Juan Manuel

Pastor Serrador

Inspector Klein

Luisa Sala

Inglud Jekyll / Ingrid Fisherman

Manuel Guitián

Ciceron

Ramón Lillo

Emilio, the inspector's assistant

Jesús Franco

Piano Player

Marta Reves