Zh'risia, the self-styled "Dark Lord," was a Tsol'teth who hid in the Dun Fortress after his master was killed by Baron Vukub Ysin'zhu. He spent his time in hiding planning to overthrow the Church and annihilate the Tsol'aa, and hoped that by doing so, he would become a Tsol'teth master. This plan, as detailed in the Dun Valley Saga, ended in failure. Zh'risia was slain by the adventurer Dirgmal.