Kuiil was an Ugnaught male who had worked a lifetime to be free of servitude. He came to the out-of-the-way planet of Arvala-7 seeking peace, and worked as a vapor farmer who offered valuable skills to those who could meet his price. Eventually, criminals and mercenaries trespassed on his world during the time of the New Republic, and at some point Kuiil encountered the Mandalorian bounty hunter Din Djarin. After the plan to relieve Grogu from being hunted went poorly, Kuiil was eventually tracked down, shot, and killed by Imperial scout troopers on speeder bikes.