 Mictlantecuhtli and his wife were the opposites and complements of Ometecuhtli and Omecihuatl, the givers of life.Mictlanteculhtli was the god of the day sign "Itzcuintli" (dog), one of the 20 such signs recognised in the Aztec calendar, and was regarded as supplying the souls of those who were born on that day.He was seen as the source of souls for those born on the sixth day of the 13-day week and was the fifth of the nine Night Gods of the Aztecs.