Mor Ul Rek was founded by the TzHaar people. The TzHaar led an isolated life with four castes; the Ket, Xil, Mej and Hur castes. The TzHaar-Ket patrol the city to protect its inhabitants from any dangers. The TzHaar-Xil hunt volcanic animals to feed their society. The TzHaar-Mej work as advisors, while a few also act as leaders. The TzHaar-Hur craft various items and equipment. The TzHaar, wary of JalYt interference, refuse to let players enter the Inferno until they give up a fire cape.