Vark

Vark was a Klingon who was the head of the kitchen staff at the Federation Embassy on Qo'noS. In 2379 in the month leading up to the attempted takeover of the embassy, fifteen new employees were hired by Vark for the kitchen staff, all members of Klahb, the group that attempted the takeover.

After they realized that Worf and one security guard had escaped, Vark and Rov, the leader of the invaders, began to argue about their plan. Vark had wanted to wait until Worf had left the embassy to attempt the takeover. Later, when Alexander Rozhenko began to convince some of their captors that Rov planned on letting them die as matyrs but escaping himself, several of them including Vark began to get angry with Rov. Eventually, after Worf began to systematically take out the invaders, Vark became frustrated enough to attempt to kill Rov, but Rov was too fast and shot him first with his disruptor, killing him. (TNG novel: A Time for War, A Time for Peace)