Xolot (Feathered Dog). In Aztec and Toltec mythology, Xolotl is the god of lightning who guides the dead to the Mictlan. The Aztec regard him as the twin brother of Quetzalcoatl. As lord of the evening star and personification of Venus, he pushes the sun at sunset towards the ocean and guards her during the night on her dangerous journey through the underworld. Xolotl is represented as a skeleton, or as a man with the head of a dog.