- "Never concede to evil. I ask that the council obey its own law."
The Council of Sisters was the key decision-making body of the Singing Mountain Clan. When times of trial and decisions regarding the clan's stance on specific issues arose, members of the clan would look to the guidance of the council, which was composed of the twelve leading women of the clan.
In 8 ABY, the Council decided to help Leia Organa, Han Solo and their companions repair their starship, declaring war on Mother Gethzerion's Nightsisters. At the time, the members of the Council included Augwynne Djo, Old Tannath, Sister Azbeth and Sister Shen.
- The Courtship of Princess Leia (First appearance)
- Young Jedi Knights: Shadow Academy (First identified as Council of Sisters)