Asa-Ku, a Voss male from Voss, existed throughout the Galactic War. He was a Dream-walkers faction member within the Voss Mystics. Circa 3640 BBY, while located in the Mind Healer's grove, he was met by Kallig, a Sith Lord, who wanted details on the Forbidden Ritual. Asa-Ku consented to reveal the secret, but only if the Sith became a dream-walkers order member.