Kulge
Kulge was a Klingon military officer in the Klingon Defense Force. In the Klingon Civil War, he was a supporter of Gowron. 

Kulge challenged Gowron's leadership of the Empire after Gowron's forces had been defeated in the Mempa sector, although the enemy supply bases in this area had been destroyed earlier, Kulge claimed that maybe the reason for the Duras successes was their better leaders and that Gowron had failed in leading them. Though Worf tried to prevent it, Kulge and Gowron fought a d'k tahg battle and through Worf's involuntary help, Gowron was able to kill Kulge. ()

Notes

 After Kulge is stabbed by Gowron and falls, he is seen breathing in all subsequent shots.  While it can be presumed he either died from his injuries or was executed for losing the challenge fight, his death is a presumption.

Klingons
Klingon military personnel