The Robot vs. the Aztec Mummy (originally La Momia Azteca contra el Robot Humano) is a Mexican horror film, the third in a trilogy, directed by Rafael Portillo, starring Ramón Gay and Rosa Arenas. It blends elements of science fiction and horror. The film is the sequel to The Aztec Mummy and The Curse of the Aztec Mummy, and a large portion of it consists of an extended recap of the events from the first two films in the series. The three films were all shot in 1957, one after another without a break in the production schedule.

References:
https://en.wikipedia.org/wiki/The_Robot_vs._The_Aztec_Mummy