T'Greth

From Memory Alpha, the free Star Trek reference.

T'Greth was a Klingon who served under Kohlar in a quest to find the kuvah'magh of the Klingon species.

In 2377, after encountering the USS Voyager, Kohlar believed that B'Elanna Torres was carrying the unborn savior, but T'Greth refused to believe this. He challenged Tom Paris to a death match to prove that Torres was not carrying the savior, but was unable to complete the match because he, like most of the Klingon crew, had nehret. He tried to take over Voyager, beaming most of the crew to a planet that Voyager was going to transport the Klingons to settle on. The bridge crew of Voyager was able to stop him. The Doctor cured him and the rest of the Klingons with cells from Torres' unborn child, and the Klingons willingly settled on their new planet. (VOY: "Prophecy")

T'Greth was played by Sherman Howard.