Spanish conquest of the Aztec Empire Meanwhile, Moctezuma's ambassadors, who had been in the Spanish camp after the battles with the Tlaxcalans, continued to press Cortés to take the road to Mexico via Cholula, which was under Aztec control, rather than over , which was an ally of Tlaxcala. They were surprised Cortés had stayed in Tlaxcala so long "among a poor and ill-bred people". Cholula was one of the most important cities of Mesoamerica, the second largest, and probably the most sacred. Its huge pyramid (larger in volume than the great pyramids of Egypt) made it one of the most prestigious places of the Aztec
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