While the film was in its production stages, William Marshall worked with its producers to make sure that his character had some dignity in it. His character's name was changed from Andrew Brown to Mamuwalde and he received a background story about his being an African prince who had been turned into a vampire by Dracula in 1780.
The film was popular in the U.S., debuting at #24 on "Variety"'s list of top films. It eventually grossed over $1 million, making it one of the highest grossing films of 1972.
According to the Amercian Film Intitute's Catalog entry for this picture, William Marshall's Mamuwalde was the first black vampire to appear in films.
The brief scenes of the ship at the docks, and the red pickup with the coffin/box loaded in the back, are from "Count Yorga, Vampire".
The film was shot on location in Los Angeles, with some scenes shot in Watts. Its final scenes were shot at the Hyperion Outfall Treatment Plant in Playa del Rey.
The Hues Corporation: performing in the night club. They are best known for their 1974 hit song "Rock the Boat."