First sword-and-sandal movie filmed in Iran, it presented Iranian bodybuilder Iloosh Khoshabe as Maciste/Vulcan; he would make a comfortable career in similar roles.
In German-language countries, France and Spain, the film was shown in different cuts-- reflected in disparate censorship ratings--according to the seconds or minutes of erotic scenes deleted from the the director's cut.
Gordon Mitchell does a guest appearance as Pluto, God of Darkness, in a short sequence that is unrelated to the plot.
The French VHS PAL release by MPM and the Dark Side Collection VHS PAL bilingual release, "Vulcan: Dieu du Feu--Hephaistos: o teos tis fotias", has a misleading back cover art of a mixed arena fight between a long-haired woman and a man, which is NOT from this film.
Italian censorship visa #37004 issued March 12, 1962.