Kurn Kurn , son of Mogh , was a male Klingon in the 24th century and officer in the Klingon Empire . He was biologically the son of Mogh , and Worf ' s younger brother , but was raised by Lorgh . His true lineage was not generally known until 2366 , when Mogh was accused of being a traitor during the Khitomer Massacre . Kurn later supported Gowron during the Klingon Civil War , and afterwards gained a seat on the Klingon High Council . However , he fell from grace when Worf refused to support the Klingon invasion of Cardassia . To regain his honor , his memory was wiped and he assumed a new identity of Rodek , son of Noggra . Early life and career . Kurn was born in 2345 and not yet a year old , when his father Mogh left Qo ' noS for Khitomer with his wife and older son Worf . However , because Kurn was so young , and since the trip to Khitomer was only meant to be a brief visit , he was left in the care of Lorgh , a family friend . After his parents were killed at the Khitomer Massacre , Lorgh accepted Kurn as his own son due to his own lack of male offspring . The High Council assumed that Kurn had actually accompanied his family and died in the attack that killed his parents . Kurn did not know his true family until he reached the Age of Ascension . Kurn eventually joined the Klingon Defense Force s and rose to the rank of commander . ( ) He lived with his daughters at a house on Qo ' noS . This house was near a lake which was so clear that the bottom could be seen . ( ) In 2366 , Duras , a powerful member of the Klingon High Council , claimed that new evidence had emerged implicating Mogh of betraying the Klingons at Khitomer . Duras led the Council to judge Mogh guilty , believing that there were no members of his house left to oppose the accusation . Since Worf , as Mogh ' s heir , was responsible for challenging the Council ' s judgment , Kurn requested a posting aboard the as part of the Officer Exchange Program to evaluate his brother as a warrior . Kurn was impressed with Worf , and told him of Duras ' s claims . The two of them returned to Qo ' noS to clear Mogh ' s name , with Captain Picard providing Kurn with further reasons to admire his brother when Picard took the " Enterprise " itself to Qo ' noS so that Worf ' s crew could stand beside him during his challenge . Worf took on Kurn as his " cha ' DIch " during the proceedings , but insisted that Kurn not reveal his true father so that he would not also suffer the consequences if Worf failed . Duras knew of Kurn ' s true bloodline , and had two assassins attack him before the " Mek ' ba " . Kurn was stabbed and left in a coma , compelling Worf to ask Picard to take his place as " cha ' DIch " . After Worf accepted discommendation to avoid civil war , Kurn continued posing as the son of Lorgh to preserve his honor and position . ( ) Civil war . After Chancellor K ' mpec died a year later and the Klingon Empire again teetered on the verge of civil war , Kurn believed that Gowron was too weak to lead the Empire and prepared to assassinate him and battle the forces of the Duras sisters himself . Now in command of a Klingon squadron from the Bird - of - Prey , Kurn secured the allegiance of four squadron commanders in strategic sector s . However , Worf asserted his authority as the older brother and ordered Kurn to support Gowron . Kurn was able to convince three of his allies to join him , and came to the aid of Gowron when his flagship came under fire while in orbit of Qo ' noS . Once he was installed as chancellor , Gowron restored the honor of the House of Mogh . ( ) In the ensuing Klingon Civil War , Kurn served with distinction in several engagements . In one particular battle , he destroyed two pursuing Birds - of - Prey from a squadron commanded by by triggering a solar flare . He led the forces which stormed the Duras family residence at the end of the war and captured Toral , son of Duras . In recognition of his support , Gowron gave Kurn a seat on the High Council . ( ) Dishonor and a new life . For a time , it seemed as though the House of Mogh was on the rise ; it was rumored that his house might even be in contention for the position of chancellor if Gowron died . ( ) In 2372 , he learned of Gowron ' s and Martok ' s plan to invade the Cardassian Union , and of Gowron ' s desire to end the treaty with the Federation in response to its disapproval . Kurn opposed the decision to break the treaty , since he thought Gowron underestimated the Federation , and did not want to provoke a war , a war he knew could come and that the Empire might lose . He was overruled in council . However , Kurn ' s position soon ended when Worf refused to join the Klingon invasion of the Cardassian Union by Gowron personally . In retaliation , Gowron seized the House of Mogh ' s lands and titles , and publicly expelled Kurn from the High Council in disgrace . ( ) Over the next four months , Kurn oversaw the dissolution of the House of Mogh . After this , he wandered as a " persona non grata " in the Empire , unable to commit suicide , as it was considered a dishonorable mode of death . He finally arrived at Deep Space 9 in a drunken state . He asked Worf to restore his honor by killing him in the " Mauk - to ' Vor " ritual . Worf reluctantly agreed , but Jadzia Dax realized what Worf was about to do and with Odo ' s help secured medical treatment for Kurn in time to save his life . Since Captain Sisko made it clear that Worf could not attempt the " Mauk - to ' Vor " a second time , he arranged for Kurn to join Odo ' s station security forces . Odo complimented Kurn as being good at his job if a little stern . However , this ended after an incident where Kurn allowed the Boslic Tilikia to shoot him . Worf , seeing the depth of Kurn ' s despair , convinced him that it was the Empire who was acting dishonorably , by following Gowron against Cardassia and the Federation . Subsequently , Kurn helped to uncover the Klingon plot to mine the Bajoran system by infiltrating the attack cruiser . During the mission , Kurn saved Worf ' s life by correctly spotting a guard ' s intent to kill . Afterward , as Kurn had killed another Klingon warrior , was prepared to accept the dishonor of direct suicide , however , Worf had arrived at a new solution at Dax ' s suggestion . The plan was that Kurn ' s memory would be wiped , his face surgically altered , and his DNA resequenced , allowing Kurn to assume a new identity . According to Doctor Bashir , the only things Kurn would remember were the Klingon language and the fact that he was a Klingon ; essentially providing him the most basic set of skills to survive in the Empire . A family friend , Noggra , agreed to take Kurn as his own son , who was renamed Rodek . Rodek was told he suffered amnesia during a shuttle accident . ( ) Parallel universe . In another quantum reality , Worf was unable to attend the " bat ' leth " tournament on Forcas III in 2370 due to a malfunction in the " Enterprise " s main deflector . Kurn attended the tournament in his place despite his lack of experience with the blade . ( ) Appendices . Background information . In the " " episode , K ' mtar / Older Alexander Rozhenko reveals that he has knowledge of Kurn despite them never meeting ( at least on screen ) . K ' mtar also mentioned that Kurn had no male heirs , suggesting that perhaps Kurn may have a daughter or daughters ( ) . It should also be noted that despite being his younger brother , Kurn outranked Worf ( in the Klingon Defense Force ) and gave him orders in some of his appearances ( , ) . Kurn was played by Tony Todd in all of his appearances . He is also the only Klingon seen crying on screen ( contradicting Spock ' s assertion in " " that Klingons have no tear ducts ) . Apocrypha . The novel " The Art of the Impossible " establishes that Lorgh actually petitioned Mogh and his wife Kassin , to care for Kurn while they were on Khitomer so as not to risk the entire family if something should happen to them . According to the novel , Lorgh recognized that a Klingon had to have betrayed them to the Romulans . In doing so , the individual who was responsible or the person ' s family , might seek vengeance against Mogh ' s family . With Worf safely in the Federation , Lorgh knew Kurn would be a target so he took Kurn in as his son , making sure General Worf ' s line would continue ( as he had been a friend of Worf ' s ) and vowing to make Kurn a powerful and influential warrior in the Empire . The " " book series indicates that Kurn , in his new identity as Rodek , continues to serve the Empire on board a ship named for the Klingon Chancellor , serving as both weapons officer and later also as second officer . The novel " Warpath " features the mirror universe version of Kurn , serving as a General in the Klingon - Cardassian Alliance . Kurn ( as Rodek ) appears in " Star Trek Online " , voiced again by Tony Todd . By the game ' s setting in the early 25th century , Rodek has risen to the rank of General , and was involved in the " Reckoning " storyline involving the Lukari ( a race introduced in the leadup to the expansion " Agents of Yesterday " ) and the Tzenkethi . He also appears in the feature episode " Brushfire " , in which he and the player character raid a Son ' a prison in the Briar Patch to liberate former Chancellor Martok , who recognizes Rodek as Kurn and reveals his true bloodline to him .