Konmel

From Memory Alpha, the free Star Trek reference.

Konmel was a lieutenant in the Klingon Defense Force in 2364 who became disillusioned by the peace in the Klingon Empire. Along with Korris and Kunivas, he stole the Batris, a Talarian freighter, and was involved in the destruction of the IKS T'Acog. Rescued from the damaged freighter by the USS Enterprise-D, he set about trying to convince Lieutenant Worf to join him and Korris in their attempts to engage in "glorious battles".

When Captain Jean-Luc Picard learned of their status as criminals, he ordered them to be arrested and put in the brig. He and Korris made a phaser from parts concealed in their uniforms, and attempted a breakout. However, Konmel was killed in the escape attempt. (TNG: "Heart of Glory")

Konmel was played by Charles H. Hyman.