una producción de Andrés Vicente Gómez para Sogetel, Iberoamericana Films Producción y M.G. SRL (Italia) ; en asociación con Canal + (Espagna) y la colaboración de SOGEPAQ, S.A. ; guión, Jorge Guerricaechevarría y Alex de la Iglesia ; producida por Andrés Vicente Goméz ; dirigida por Alex de la Iglesia
Japanese screenplay, Kisei Choo ; character design and animation director, Yoshiaki Kawajiri ; producers, Kenji Kurata, Makoto Saya ; adaptation produced and directed by Carl Macek ; English dialogue and direction by Greg Snegoff ; produced by Discotek Media, Eastern Star Inc. ; producer, Brady Hartel
DacFilm ; Dario Argento presents ; a Lamberto Bava film ; original story, Dardano Sacchetti ; screenplay, Dario Argento, Lamberto Bava, Dardano Sacchetti and Franco Ferrini ; produced by Dario Argento for DACFilm, Rome ; directed by Lamberto Bava
New World Pictures in association with Cinemarque Entertainment presents a Film Futures production ; executive producers Clive Barker & Christopher Webster ; produced by Christopher Figg ; directed by Tony Randel
a Pioneer LDC, Nikkatsu, Oz & Xanadeux Presentation in association with Aozora Investment, an Oz Production, Fun Factory ENBU, Entertainment Partners Asia ; written and directed by Takashi Shimizu