A dual-gendered Aztec god, Omoteotl is made up of the male aspect, Ometecuhtli, and the female aspect, Omecihuatl. It is the supreme being, creator of the gods, and the god of fire. He's also known as Tonacatecuhtli and Tonacacihuatl.
"The dualistic creator of all in Aztec lore. Ometeotl's male aspect is Tonacatecuhtli and his female aspect is Tonacacihuatl. They are known as the creator, but the world's actual creation was done by their four sons."