Two-water is a female human from the moon Xalótcan and the sister of Muan-zac. When she met Colonel Jack O'Neill and Major Samantha Carter she thought they wer Quetzalcoatl and Chalchiuhtlicue. She and her brother were rescued along with the rest of the Xalótcan people were rescued through the use of a crystal skull and transported to the planet Yaxkin when the moon Xalótcan was destroyed. (SG1: "City of the Gods")