Was originally to be made in the 1990s and directed by Stuart Gordon.
The Homunculus creature in the comic looked like a werewolf. The original design of the creature, by Spanish effects artist Poli Cantero, was a snake-like creature with a muscular neck and a cobra-esque hood. Director Brian Yuzna liked the design, but when it came to building the full-scale puppet, Yuzna didn't like it. He then turned to Japanese surrealist Screaming Mad George to design and construct the monster.
Fantastic Factory's first production. It was followed by Dagon (2001), Arachnid (2001), Darkness (2002), Beyond Re-Animator (2003), L'enfer des loups (2004), Rottweiler (2004), La nonne (2005) and La Malédiction des profondeurs (2005). Fantastic Factory closed in 2005 after they failed in its attempt to create the first Spanish cinema company specialized in genre movies.
Film debut of actress Michelle Jenner. It was also the first time she worked with her father, Miguel Ángel Jenner, who plays a police officer.
Michelle Jenner's debut.