Tezcatlipoca (teskätlēpō'kä) [key], ancient deity of the Toltec in Mexico. Identified with the night sky, the moon, and the stars, and associated with the forces of evil and destruction, Tezcatlipoca shared dominion over humanity with Quetzalcoatl, the god of light and good. Of the various legends surrounding their continual feud, one of the most important tells of Quetzalcoatl's expulsion from Tula, the Toltec capital.