Bene Gesserit
In "Chapterhouse Dune", the Great Honored Matre on Junction is Dama; she is referred to as "Spider Queen" by the Bene Gesserit leader Darwi Odrade. Bene Gesserit Reverend Mother Lucilla flees the destruction of Lampadas by the Honored Matres, but is forced to land on Gammu. She is captured and brought before Dama, but not killed outright.