"Two God," a principle of duality and theoretically a creator deity, possibly either with male and female complementary roles/aspects or a pair of deities with one being male (Ometecuhtli or Tonacatecuhtli, among other names) and one female (Omecihuatl or Tonacacihuatl, among other names); may have created all other deities; may have collaborated with Tezcatlipoca and Quetzalcoatl; may have presided over the "celestial Place of Duality (Omeyocan)"
This term appears much more in interpretive literature than in primary sources. Since about the early twentieth century, the concept of gender duality captured the imagination of many observers, who spun off any number of explanations, saying this was the "God of Duality," the "Twin God," "Two Sacred Spirit," "the origin of the cosmic forces," "the supreme creator deity," "bisexual," a merging with the sun god, "existed as Tezcatlipoca," "invoked as Lord of the Close Vicinity," "all-begetting Father and universal Mother," and, "the divine force that was the source of everything."