Spanish conquest of the Aztec Empire the Spanish continued its destruction, as they soon began to establish the foundations of what would become Mexico City on the site. The surviving Aztec people were forbidden to live in Tenochtitlan and the surrounding isles, and were banished to live in Tlatelolco. After hearing about the fall of the Aztec Empire, Tarascan ruler ("Cazonci") Tangaxuan II sent emissaries to the Spanish victors (the Tarascan state was contemporary with and an enemy of the Aztec Empire). A few Spaniards went with them to Tzintzuntzan where they were presented to the ruler and gifts were exchanged. They returned with samples of
The Robot vs. The Aztec Mummy in the production schedule. The evil Dr. Krupp (Luis Aceves Castañeda), a mad scientist known as "The Bat", managed to escape the snake pit into which he was thrown at the end of "The Curse of the Aztec Mummy" and continues his efforts in this film to steal a valuable Aztec treasure from the tomb of a centuries-old living mummy, Popoca (Angel di Stefani). Krupp builds a robot with a human brain in it, planning to use it to destroy the mummy, should he return to thwart his efforts. Krupp's former colleague and original finder of the mummy, Dr. Eduardo