Alexander Rozhenko Alexander Rozhenko , also known as Alexander , son of Worf , was the son of Worf and Federation Ambassador K ' Ehleyr . He was conceived in 2365 and born on the forty - third day of Maktag in 2366 and was a member of the House of Mogh and the House of Martok . ( ) Early life . Alexander was conceived during a brief encounter between Worf and K ' Ehleyr when the ambassador came aboard the in an effort to defuse a potential crisis presented by the return of a Klingon D7 class battle cruiser IKS T ' Ong that had been dispatched decades before as a sleeper ship . ( ) After the crisis was successfully resolved , K ' Ehleyr departed the " Enterprise " . She concealed her pregnancy and the birth of Alexander from Worf , finally revealing approximately one year later when she returned to the " Enterprise " as part of a contingent representing K ' mpec in his efforts to persuade Jean - Luc Picard to act as the Arbiter of Succession for the Klingon Empire . Until that point , Alexander had lived with his mother , not knowing who his father was . Despite a coy attitude meant to antagonize Worf , K ' Ehleyr wanted Worf to acknowledge Alexander as his son . Worf was reluctant to do so because of his recent discommendation and the dishonor that Alexander would be forced to share as a result . However , despite his concerns Worf was forced to acknowledge the relationship of K ' Ehleyr and Alexander to him when K ' Ehleyr was killed by Duras because of her investigation into the circumstances surrounding the Khitomer Massacre and Worf ' s discommendation . After K ' Ehleyr ' s death , Worf took custody of Alexander and sent him to live with Worf ' s foster parents , Sergey and Helena Rozhenko . ( ) Aboard the " Enterprise " - D . Alexander was brought back on board the " Enterprise " - D one year later by Helena Rozhenko . During his time on Earth , Alexander had had problems adjusting . Though smart and high - spirited , he was not always truthful and sometimes difficult to control . Helena and Sergey believed that Alexander ' s behavior problems were not unusual for a boy of his age , but could only be solved by the presence of his father . Helena also admitted that the two of them were too old and ill - equipped to raise a Klingon child , even one who was ¼ Human . ( ) Alexander wasn ' t a " typical " Klingon child , considering that he was one - quarter Human and had lived with Humans for most of his life . Initially , the adjustment to living on the " Enterprise " was very difficult . Much to his father ' s dismay , Alexander displayed tendencies toward telling lies and even was guilty of small instances of theft . Even after his father disciplined him , Alexander ' s behavior was a problem in school , causing Ms . to report to Worf that his defiance , along with continued theft and lying , were disrupting the class . His disobedience to Worf and disregard for the instructions of his elders and ship ' s regulations eventually came to a head when Alexander was nearly killed in a fire in the ship ' s biolab . ( ) Alexander eventually settled into life on the ship and made friends , but the adjustment took time . Deanna Troi took a special interest in the child and his difficulties adjusting to the ship and his father . The two developed a strong relationship , so much that Worf asked the counselor to be Alexander ' s guardian when it appeared he might die following a dangerous medical operation . ( ) Alexander was also friendly with Counselor Troi ' s mother , Lwaxana Troi , who came aboard the " Enterprise " in 2368 to be wed to Campio . In their brief time together , Alexander and Lwaxana spent time together on the holodeck and became good friends , much to his father ' s dismay . ( ) While on board the " Enterprise " , Alexander at one point developed a Deadwood holodeck program with the help of Reginald Barclay in 2369 . Despite his efforts to find extra duties for himself , Worf agreed to participate in the program as a means of interacting with his son and improving their relationship . To his surprise , Worf enjoyed the program , especially his role as the sheriff with Alexander as his deputy . Initially , the program was too easy and Alexander was disappointed , so he ordered the difficulty level be reset to four , forcing his father to expend more effort in apprehending the criminal characters . At the same time , Lieutenant Commander s Geordi La Forge and Data were conducting an experiment which went awry and influenced the program . The main characters took on the appearance and abilities of Data and the holodeck safeguards were removed , making the 19th century firearms lethal and placing Alexander in jeopardy . Alexander eventually escaped , but he worried that the episode would mean his father would never again visit the program . His father assured him that if the town of Deadwood were to be threatened again , they would need a sheriff . . . and a deputy . ( ) In 2369 , Alexander helped Captain Picard and others regain control of the ship from DaiMon Lurin . The captain , along with Ro Laren , Keiko O ' Brien , and Guinan , had passed through a molecular reversion field that had reverted them to a stage of physical youth . Blending in with the ship ' s civilian children they re - took the ship . Alexander participated in their plan by distracting several of their guards and stealing items from sickbay . ( ) In 2370 , an adult Alexander who had traveled back in time from forty years in the future , made contact with Worf and Alexander , posing as K ' mtar , gin ' tak to the House of Mogh . In an attempt to change history , he tried to convince Worf that his young counterpart needed to be trained in the ways of a Klingon warrior . When it became apparent that his counterpart was not willing to do so , however , he attempted to kill him , only to be stopped by Worf . He explained to Worf that , in his time , Worf had been assassinated on the floor of the High Council , due to Alexander ' s attempts at bringing peace to the Empire . Wishing to prevent this future , he had traveled back in time in an attempt to ensure that his counterpart would not grow up to be a diplomat , but rather a warrior who could fight at his father ' s side . Worf told him that , now that he had disrupted the flow of history , his death was no longer a certainty , and that he would be proud of his son no matter what path he chooses to follow . After hearing these words , the adult Alexander departed , but not before expressing his love for his father . ( ) Following the destruction of the " Enterprise " - D in 2371 , Worf sent Alexander back to Earth to live with his foster parents while he journeyed to Boreth during his extended leave from Starfleet . Upon returning to active service , he chose to leave Alexander on Earth , believing he was far happier there than he was living with him . ( ) Service to the Empire . In 2374 , after years of avoiding Klingon culture , Alexander enlisted in the Klingon Defense Force s at the height of the Dominion War . He was given the rank of bekk , and assigned to the under General Martok and Worf . He had severe trouble serving with other Klingons , as he was unskilled as a warrior and displayed many Human traits that the other crew members found soft and disgusting . Alexander ' s adjustment to life among Klingons was difficult . He was unable to offer a full explanation for his change of heart to either Worf or Martok but seemed to recognize , as he reached Klingon maturity , that his path lay with his people . Though none questioned his commitment , his combat skills were sorely lacking and his lack of knowledge of Klingon customs hurt his standing on board . Upon being reunited , Alexander was emotionally cold towards Worf and was resentful and bitter at being abandoned by his father . Alexander also corrected Worf in conversation when Worf referred to his adoptive parents as Alexander ' s grandparents ( ) . It should be noted that in other instances Alexander demonstrated an affection for Worf ' s adoptive parents and that the instance mentioned above may have been an attempt to further irritate and get back at Worf . Moreover , his presence on the vessel proved a trial for Worf and a source of resentment among the crew . At Martok ' s urging Worf attempted to mend his relationship with Alexander both as a father and a first officer . Martok advised Worf to let matters essentially tend to themselves ; that Alexander would find a place on the ship , and by extension , learn about Klingon culture along the way . Though he might suffer some broken bones , as well as other injuries , he would survive . When Alexander forgot to clear a battle simulation from the sensors , he called an alert , believing they were under attack . When the mistake was realized , the crew laughed . Martok told Worf the crew had accepted Alexander , and Worf replied yes , as the ship ' s fool . Tension continued between Alexander and Worf when Martok agreed to Worf ' s request to have Alexander transferred off the ship at the next opportunity , due to Alexander ' s inability to master basic combat skills and his ongoing resentfulness towards Worf , which clouded his judgement , as well as his lack of a real answer when Martok challenged his motivations . All of these made Martok believe Alexander unfit for battle . Alexander accused Worf of never accepting him . The " Rotarran " was attacked shortly after . While attempting to make repairs , Alexander managed to lock himself into a corridor , the ship ' s fool once again . When Worf observed the affection the crew held for Alexander and his own graceful acceptance of the role , Worf changed his mind about transferring Alexander off the ship , telling Alexander , " I cannot fix the mistakes I have made , but from now on I will stand with you . " I will teach you what you need to know to be a warrior , and you will teach me what I need to know to be a father . " " Alexander challenged Worf by saying " let ' s see if you mean it " . Eventually the two reached a full reconciliation that led to Alexander joining the House of Martok . ( ) . Alexander continued his service aboard the " Rotarran " and strengthened his relationships with his fellow Klingons . He continued to make mistakes , such as flooding an entire corridor with superheated hydraulic fluid . This did not strain his position within the ship , however , as the crew considered him a good luck charm ; the more mistakes Alexander made , the fewer they would make in battle . Later that year , along with most of the " Rotarran " s crew , he transferred to the where he hoped the good will toward him would continue . ( ) By 2375 , Alexander had been made weapons officer of the " Ya ' Vang " and , according to Ezri Dax , was beginning to lose his clumsiness . ( ) Personal interests . Worf considered Alexander to be more Human ( in personality and interests ) than Klingon , and tried desperately to change him . ( ) It wasn ' t until the revelation that K ' mtar was actually an older Alexander from an alternate future that Worf began to accept his son for who he was . ( ) Alexander had a fondness for jazz music due to the influence of William T . Riker , and much to the annoyance of his father . ( ) Alexander also had a fondness for the Wild West , and would often play in holodeck scenarios . ( ) " In an alternate timeline , Alexander became a diplomat with no interest in becoming a Klingon warrior . However , during the Dominion War , he ended up joining the Klingon Defense Force as a low - ranking Bekk aboard the IKS " Rotarran " , then as a weapons officer aboard the IKS " Ya ' Vang " . " ( ; ) Although clumsy with a " bat ' leth " , Alexander had some proficiency with the " d ' k tahg " when dueling with rival Klingon officer Ch ' Targh . ( , ) Family . K ' Ehleyr . Alexander only knew his mother briefly but his love for her , and hers for him , remained with him his entire life . Likewise , her death marked him forever . It was the first time Alexander had seen death , and the powerful image of Worf over the bloody body of K ' Ehleyr was particularly difficult for him . ( ) Many years later , the fear of losing his father in the same way he lost his mother haunted Alexander and drove him to travel back in time in order to prevent his father ' s death . ( ) Worf . From the beginning Worf had a hard time adjusting to the presence of Alexander in his life . He was particularly distressed that K ' Ehleyr had not taught the child anything of Klingon tradition before her death . His distress was made even more acute by Alexander ' s continued insistence that he had no desire to become a warrior . ( ) After Alexander came to live on the " Enterprise " Worf was shocked to discover his son lied often , and even stole objects . Despite his efforts to teach his son the values of Klingon society through traditional stories , such as the story of Kahless and Morath , Alexander did not take readily to the lessons . For a brief time Worf considered sending Alexander away from the " Enterprise " to a Klingon school . Eventually he decided against this , unable to part with his son , and offered Alexander the greater challenge of remaining on board with him . ( ) Still , it was the thought of his son that caused Worf to abandon thoughts of ritual suicide in 2368 and choose a risky surgery when he was paralyzed in an accident . ( ) In 2372 , Worf brought an image of Alexander to starbase Deep Space 9 when he was stationed there . ( ) However , Alexander ' s relationship with Worf had not improved and he elected to live on Earth with the Rozhenkos rather than join his father on DS9 . That decision haunted both Alexander and his father . Alexander felt that because he had not been the son that Worf wanted he had been rejected , and Worf acted as if he had no son . This rejection continued to divide father and son when Alexander came aboard the " Rotarran " . He declared that he had no family or House and that any honor earned would be his own . Worse , his obvious lack of combat skill and previous declarations to never be a warrior led Worf to accuse him of being ill - suited for life during war , and eventually tried to transfer him off of the ship . Alexander refused and the confrontation between the two was only resolved after the rest of the " Rotarran " crew began to accept Alexander . ( ) Not long after the two continued to mend their relationship when Worf asked Alexander to act as his Tawi ' Yan , or swordbearer , during his wedding to Jadzia Dax . Alexander was honored , even more so because it was clear that the couple had altered their plans in order to include him in the wedding before he transferred to the " Ya ' Vang " . ( ) Deanna Troi . During his stay on the " Enterprise " - D , Alexander had looked up to Counselor Troi and Worf had considered her to be the closest thing to a mother that Alexander had . Worf asked the Troi of an alternate quantum reality to be Alexander ' s Soh - chim , which meant that if anything were to happen to Worf , Troi would take custody of Alexander . ( ) Other . The elder Alexander , as K ' mtar , had suggested to the younger Alexander that he had female cousins around his age on Qo ' noS , possibly the daughters of Kurn , as K ' mtar said he had no male heirs . ( ) Appendices . Background information . Alexander was portrayed by three different actors over an eight - year period , which established that Klingon youths mature more quickly than Humans do . He first met his father in 2367 ( age one , played by Jon Steuer ) appearing to be about four years old . He was later seen from 2368 - 2370 ( age two - four , played by Brian Bonsall ) appearing to be about ten years old . Alexander then served on the " Rotarran " ( age eight , played by Marc Worden ) appearing to be at least sixteen . Ronald D . Moore addressed this directly when talking about : " " We ' re pegging Alexander as being roughly the equivalent of a thirteen to sixteen - year - old Human male , although his actual age is much younger . Hey , Klingons mature faster , okay ? " " This phenomenon , also seen with Toral , was often referred to as . There were also other reasons for Alexander to be depicted as older in . Steve Oster commented : " " The role demanded a lot of time on the set . And the amount of time you have with a minor is very restrictive . Add to that the fact that Klingon actors need to go through three hours of makeup in the morning , and suddenly you have very little time with your actor . So his age was important . Also , we kept in mind the fact that if the actor was too young , Worf would seem too harsh . He ' d come off like an abusive father , rather than a father who wants the best for his son " " . ( " " ) On the picture seen in Worf ' s quarters in , Alexander was portrayed by Richard Martinez . The adult version of Alexander from an alternate future seen in was played by James Sloyan . Rick Berman and Michael Piller were hesitant to cast Sloyan in the role , coming as it did so soon after his first appearance as Doctor Mora Pol in . However , Jeri Taylor convinced them that the Klingon makeup would hide this fact . ( " " ) " New Ground " established Alexander ' s birthday as the 43rd day of Maktag , stardate 43205 . This would place his birth during the third season episode . His makeup in " The Next Generation " episode was applied by makeup artist Tania McComas . Alexander was referenced in the first draft script of ( Worf remarking that , since he was sent back to Earth , " " He is happier . I am happier , and there is much less noise " " ) . Apocrypha . The novel " A Time for War , A Time for Peace " established that upon Worf ' s return to Starfleet , he nominates Alexander to succeed him as Federation ambassador to the Klingons . When Alexander asks why , Worf simply told him that he once had a vision of Alexander ' s future and Worf said Alexander ' s service to the galaxy would be one worthy of song . Alexander also appears in the two novels of " " . In " Star Trek Online " , players of the KDF faction encounter Alexander ( under his K ' mtar alias ) on Rura Penthe . He was incarcerated there after discovering a conspiracy against members of the House of Martok , including Worf . Alexander then aided the player in exposing the conspirators and defending the House of Martok . Alexander sacrificed his life to defend Worf , preventing what K ' mtar had originally traveled back in time for , in .