Sh'tk'ith was a Ssi-ruu who, along with Firwirrung, was responsible for studying the captured Dev Sibwarra. Sh'tk'ith was a hypnotist who kept Sibwarra submissive to the Ssi-ruuk. As a member of the blue-scaled ruling class, Sh'tk'ith's scales were a vibrant blue; hence, Sibwarra's nickname of him, Bluescale. He was killed by Dev Sibwarra aboard the Shriwirr during the Bakura Incident.