Paul Naschy as Waldemar Daninsky / Irineus Daninsky / Werewolf

Fabiola Falcón as Kinga Wilowa

Mariano Vidal Molina as Roulka

Maritza Olivares as Maria Wilowa

José Manuel Martín as Bela

María Silva as Elizabeth Bathory

Elsa Zabala as Gypsy Witch

Eduardo Calvo as Laszlo Wilowa

Ana Farra as Malitza

Fernando Sánchez Polack as Maurice, Waldemar's valet