In 2269 the IKS Devisor—under the command of Kang's friend Koloth—was overrun with yIH and the crew came down with a retrovirus created by Doctors Hurghom and Nej to attempt to reverse the changes brought about by the Augment virus. While the Klingon Defense Force wished to destroy the Devisor, Kang and the Klolode II interceded on Koloth's behalf, keeping the ship from being destroyed until the survivors could be placed into quarantine. Koloth and a few fortunate Quch'Ha Klingons had their ridges and other Hem'Quch features restored at that time.