The Howling Crag Clan was a clan of Dathomiri witches that lived on the planet Dathomir, and during the time of the Galactic Civil War, it was led by clan mother Amaya Kymeri. Following an outbreak of the blackwing virus on Dathomir, a number of members of the clan became infected with the disease and in an attempt to contain the outbreak, the Galactic Empire killed most of the clan. However three of the infected witches, Denkra Kymeri, Naija Kymeri and Thestriel Kymeri, survived by using spells to fight off the contagion, and they became known as the Sisters of the Void.