A Cardassian officer on Gul Macet's staff in The Wounded, whose friendly overture to Miles O'Brien in Ten Forward draws out the transporter chief's memories of the war.
Glinn Daro accompanies Gul Macet aboard the Enterprise in the fourth-season episode The Wounded, set in 2367, while the ship searches for the renegade Captain Benjamin Maxwell.
Unlike his colleague Telle, Daro makes a real effort to be sociable. He joins Miles O'Brien, who served under Maxwell during the Cardassian war, and remarks that the two peoples may yet learn to get on. O'Brien is curt with him.
O'Brien then explains himself by describing Setlik III, where he killed a Cardassian while defending colonists. He tells Daro that what he hates is not Cardassians but what the war turned him into. The exchange is among the first in the series to give a Cardassian an individual and sympathetic face.