Tonatiuh (pronounced Toh-nah-tee-uh) was the Aztec sun god. This deity had both a positive and negative aspect. As a benevolent god, Tonatiuh provided humans and other living beings with warmth and fertility. In order to do so, however, he needed sacrificial victims.
Tonatiuh was also the patron of warriors, especially of the important jaguar and eagle warrior orders, among whose duties was to capture war victims to sacrifice in his honor.