That would make a seriously fun crossover, especially with El Santo and Blue Demon facing classic monsters like Dracula and the Wolfman. The mix of wrestling, horror, and larger-than-life characters could also inspire some memorable character names, much like female demon names such as Lilith, Lamia, or Yuki-onna bring an immediate supernatural feel to a story. For more dark and myth-inspired naming ideas, visit https://namesnicknames.com/female-demon-names/ to explore them.

We should consolidate this effort for all of the El Santo movies.
Santo and the Vengeance of the Mummy (1971)/Santo vs. the Vampire Women (1962)
https://www.imdb.com/title/tt0208429/reference
https://www.youtube.com/watch?v=qkH1uGOrB8o