Khone

In the mirror universe, Khone was a scarred $𝜇$ soldier in the Klingon-Cardassian Alliance. In 2371, he was assigned to $𝜇$, along with Gwarz. Khone and Gwarz bullied $𝜇$ after the Terran returned from New T'Karath. After Picard left his runabout, the Stargazer, to meet with Gul $𝜇$, Khone and Gwarz boarded the ship. They severely beat $𝜇$, the boy who was watching over the Stargazer, and plundered, vandalized, and destroyed Picard's possessions, including the last surviving bottle of wine from $𝜇$. (TNG novel: The Worst of Both Worlds)