Tajor

From Memory Alpha, the free Star Trek reference.

Glinn Tajor was an aide to Gul Lemec. Tajor accompanied Lemec to the USS Enterprise-D, at that time temporarily commanded by Captain Edward Jellico, to discuss issues that had caused tensions between the Federation and the Cardassian Union concerning territorial rights. He was part of a plot to launch a sneak attack on Minos Korva a Federation territory. (TNG: "Chain of Command, Part I", "Chain of Command, Part II")

Glinn Tajor was played by an unknown actor.