The casting and crewing of "Black Sabbath" was divided between the film's three main production partners: Galatea cast actress Susy Andersen while retaining Mario Bava, who had directed several of their films, including "Black Sunday", American International Pictures secured Mark Damon and Boris Karloff, and Societé Cinématographique Lyre secured Michèle Mercier and Jacqueline Pierreux (the latter is credited under the pseudonym "Jacqueline Soussard" on American prints). Mercier had previously worked with Bava on "The Wonders of Aladdin" (1961), for which he had directed its second unit.