Martok's son, a brash Klingon warrior who bullies the station's residents during the Klingon task force's stay at Deep Space Nine.
Drex is the son of General Martok and serves with the Klingon task force that arrives at Deep Space Nine in The Way of the Warrior. He swaggers around the station, harasses Morn and leads a group of Klingons who beat Garak badly in his tailor shop.
Worf confronts Drex in Quark's, knocks him down and takes his dagger, a humiliation that Martok later raises with Worf directly. The clash is one of several early signs of the tension between Worf and the Klingon leadership that defines the episode.