The popular imagery of the inhabitants of 1,000-year old Cholula, sacred metropolis of Mesoamerica, is populated by supernatural beings that act under cover of the night. Occasionally, they harm those who break social norms (adulterers, drunks, those who stay out all night) or they may help with illnesses, meteorological phenomena or wars. The Devil forms part of today's imagery, but his constitution and trades go back to the Conquest of ancient Mexico. During a prolonged process of synthesis of beliefs, this character becomes mixed up with deities of the pantheon of the ancient inhabitants of Mesoamerica. The Devil in Cholula becomes linked to the mountain, a sacred place in the geography of this community, according to the myths and tales that we collected. He keeps his treasures in a palace built inside the mountain, as the �Lord of the Mountain�, an important deity who lived in the underworld, did before him. Similarly, because of this physical appearance, the Devil has acquired traits from another god of the pre-Hispanic pantheon, Tezcatlipoca, �Lord of the Smoking Mirror�, whose sphere of numinous action revolves around the prediction of the destinies of human beings. For that reason, the evangelizers fused the Devil and Tezcatlipoca in a single entity