As all fans of luchaodore cinema know, the dominant idea behind the genre was to portray established professional wrestlers as itinerant superheroes, running around fighting everything from crime bosses and spies to aliens and monsters. IMDB cites the date of the first crossover, SANTO AND BLUE DEMON AGAINST THE MONSTERS, as 1970. I haven't screened this flick as yet, but I have seen two other Santo-Blue Demon team-ups from the same period, so I have to pass on these two-wrestler team-ups to stand as the best of the genre.
If 1972's THE MUMMIES OF GUANAJUATO had nothing else going for it, at least it brought together the three wrestlers who had the longest careers as movie superheroes: Santo, the Blue Demon, and Mil Mascaras. Fortunately, the film also gave the wrestlers opponents who aren't simply retreads of Hollywood figures. These mummies were based on a group of well- preserved corpses found in Guanajuato, Mexico, which city subsequently became a major Mexican tourist attraction.
These two elements are the best aspects of the film: otherwise MUMMIES is not the equal of the more brain-fried Mex-horror films. For most of the narrative, director Federico Curiel seems content to show the heroes in a series of running battles with their super-strong, almost invulnerable enemies. More than that I can't say, for I only watched a Spanish language version of the film. However, I honestly don't think I'm missing any great subtleties here.
The mummies are moderately imposing, if not scary, and there's lots of action. I should note, though, that Santo doesn't show up until the last fifteen minutes; it's been strongly suggested that he was a last-minute addition to the film..