Dream-walkers were a sub-sect of Voss Mystics outcasts, who practiced the ritual of Dream-walking. Not entirely embraced by the Voss society, they had an encampement in the caves beneath Voss-Ka called the Mind healer's grove. In 3641 BBY Sith Lord Kallig approached the Dream-walker Asa-Ku, looking for the information on the Forbidden Ritual, known only to them.