Tonatiuh (Nahuatl: Tōnatiuh; "Movement of the Sun") is a sun god of Aztec lore. He was known as the fifth sun as the Aztecs believed that he was the sun that took over when the fourth sun was expelled from the sky. In the Aztec calendar, Tonatiuh is the lord of the thirteen days from 1 Death to 13 Flint. He was believed to require 20,000 sacrifices a day in order to move across the sky but it is believed that this was exaggerated by either the Aztecs or their enemies.
In Toltec culture, Tonatiuh is often associated with Quetzalcoatl in his manifestation as the morning star aspect of the planet Venus.
"The sun god of Aztec lore who is also worshipped as a war god. He is said to give warriors strength. He is often depicted as an armed warrior with the sun on his back."