Commander Kolothus, son of York'Bek, was a Klingon military officer within Klingon Defense Force and an Imperial Intelligence agent in charge of the Bird-of-Prey IKS D'Tang. In July 2390, Kolothus beamed aboard the USS Odyssey-A, representing Klingon Intelligence - to recruit a hungover Captain Lewis for a quest on the Klingon homeworld of Qo'noS. ("The Warriors of Qo'noS")