The Mark of the Wolfman, is a 1968 Spanish horror film, the first in a long series of films about the werewolf Count Waldemar Daninsky, played by Paul Naschy. The film was also known as Hell's Creatures, The Nights of Satan, The Vampires of Dr. Dracula and Frankenstein's Bloody Terror. Naschy originally suggested actress Barbara Steele for the part of the vampire countess Wandesa, but Aurora De Alba wound up getting the part.

Jacinto Molina Álvarez known by his stage name Paul Naschy, was a Spanish film actor, screenwriter, and director working primarily in horror films. His portrayals of numerous classic horror figures—The Wolfman, Frankenstein's monster, Count Dracula, Quasimodo, Fu Manchu and a mummy—earned him recognition as the Spanish Lon Chaney. Naschy also starred in dozens of action films, historical dramas, crime films, TV shows and documentaries. He also wrote the screenplays for most of his films and directed a number of them as well, signing many of them "Jacinto Molina". Naschy was bestowed Spain's Gold Medal of Merit in the Fine Arts in 2001.