Ujilli
Ujilli was a male Klingon who lived during the mid-23rd century. 

He was a member of the House of Mo'Kai. His sister married a man of the House of T'Kuvma, one of the lower Klingon houses, and gave birth to his niece L'Rell. (, )

Ujilli represented the House of Mo'Kai on the Klingon High Council in 2256. When T'Kuvma rallied the twenty-four Great Houses by using the Beacon of Kahless, his vessel answered the call. While hearing T'Kuvma lay out his desire to unite the Klingon people, he was keen to hear more. ()

During the first months of the , the House of Mo'Kai was nominally independent. In December 2256, they and the House of D'Ghor secretly arranged a meeting with  to discuss the possibility of uniting against 's forces. They were to meet Ambassador Sarek on Cancri IV. However, the meeting was in fact a ruse by Kol to capture a high-ranking Federation official. Because Sarek was unable to attend due to having suffered from a terrorist attack, Admiral Katrina Cornwell attended the meeting instead, and was captured by Dennas and Ujilli. ()

When his niece L'Rell declared herself to be the new Chancellor of the Klingon High Council in 2257, Ujilli was among skeptical Great House leaders present in the Klingon High Council Chamber. ()

He ultimately became one of L'Rell's main supporters and helped her hide her child with Voq from . Eventually, however, Ujilli decided he could not lie to Tyler any longer and revealed the child to the former sleeper agent. Soon after, Ujilli was murdered by followers of Kol-Sha of the House of Kor who kidnapped the child in an attempt to usurp power from L'Rell. ()

Appendices

Background information 
Ujilli was portrayed by Damon Runyan. His name was not mentioned in , but was shown in the episode's credits. It was first spoken on screen in  which also clarified his relationship to L'Rell.

Appearances 
 
Klingons
Klingon government officials