Drex, son of Martok

Drex, Son of Martok was a male Klingon who lived in the 24th century. He was the son of Martok, Son of Urthog and Sirella, Daughter of Linkasa. Drex was an officer in the Klingon Empire's Defense Force. After 2376, he was the only surviving child of Martok and Sirella.

2370-2371
Sometime in late 2370, Drex's father Martok had been captured by the Dominion while hunting targ on Kang's Summit on Qo'noS, and replaced by a Changeling infiltrator. The Martok changeling was so skilled that no one, not even Drex nor anyone else in the family even realized that a switch had been made. (DS9 episodes The Way of the Warrior, Apocalypse Rising and By Inferno's Light)

In early 2371, Martok's Changeling replacement led a large force to Deep Space Nine. Drex was among the many hundreds of Klingons who visited the station. While there he encountered the Cardassian Garak on the station's Promenade. Later, he and two other Klingons accosted Garak in Garak's shop, and proceeded to inflict a savage beating on the man. Odo was unable to take any action against Drex or his accomplices when Garak declined to press charges.

After seeing how the Klingons were acting in a secretive and hostile manner, Captain Benjamin Sisko arranged for Starfleet Lieutenant Commander Worf, Son of Mogh to come to the station. After speaking with Captain Sisko, one of the first places Worf visited was Quark's Bar, where he found Drex yelling at Quark to get him another bloodwine. Worf demanded to know if the Klingon yelling at Quark was Drex, Son of Martok. When Drex replied that he was, Worf stated that he was Worf, Son of Mogh, and proceeded to attack Drex. Worf was able to knock Drex to the floor, and took Drex's d'k tahg away from him. This had the effect of forcing the Martok Changeling to visit Worf, in which Worf attempted to get some answers as to the Klingon's real reasons for being at Deep Space Nine. Drex soon departed the station when the Klingon task force left on its invasion of Cardassia. (DS9 episode The Way of the Warrior)

Later Life
Over the next several years, Drex continued to serve the Empire, first during the conflicts with the United Federation of Planets, then in the Dominion War. During the war, the House of Martok played a vital role after the real Martok was rescued from Dominion captivity, with Martok eventually becoming Chancellor of the Klingon High Council in late 2375. (DS9 episodes The Way of the Warrior, Apocalypse Rising, By Inferno's Light, and Tacking Into the Wind)

The following year Martok's former romantic interest Gothmara and Drex's half brother Morjod staged a Coup d'état against Martok. During the coup, the Great Hall on Qo'noS was destroyed, and Drex's mother and sisters were killed. During the coup, Drex assisted his father by commanding a Klingon ship. While communicating with his son during the coup, Martok was surprised to see Drex behaving like a mature and seasoned officer instead of a belligerent young man. During the battle on Boreth, Drex was severely injured, and would've froze to death had it not been for Emperor Kahless, Son of Kahless. Drex recovered and was assigned to the IKS Gorkon as first officer. (DS9 novel [[The Left Hand of Destiny).

Drex's assingment on board the IKS Gorkon did not last long. Captain Klag did not like the man, feeling that Drex had not inheritited his father's sense of honor. Additionally Klag felt that Drex was detriemental to the Gorkon and her crew. A short time later Drex had been replaced as first officer by Tereth. (TNG novel Diplomatic Implausibility and KE novel The Brave and the Bold)