Joran Dax Joran Dax was a male Trill musician in the 23rd century . He became joined as the sixth host of the symbiont . He had a brother , Yolad . Born Joran Belar on stardate 1024 . 7 ( early 2260s ) , he was a renowned music ian , specializing in the piano . He graduated from one of the top music academies on , along with his brother Yolad . According to Symbiosis Commission records , he was a candidate for joining , but he was dropped from the program in his second year . Or so everyone believed . It turned out in 2286 that Joran had in fact been joined six months prior to that date , in 2285 , following Torias Dax ' shuttle accident . However , Joran ' s joining to Dax did prove an important point in that it demonstrated that more of the general population could be successfully joined . In the long term , however , the joining was unsuitable as Joran already had a volatile temperament . Once the joining was complete , Joran became increasingly violent and unstable . Trill doctors expected the rejection of the symbiont , though this did not happen . According to Yolad , ( in a conversation with Commander Benjamin Sisko ) , Joran murder ed the doctor who made the recommendation to remove him from the program to cover up the fact Joran had been joined . He had killed at least two others in addition to the doctor . ( ) . Joran died in 2286 on stardate 8615 . 2 when Dax was removed from Joran and implanted into Curzon , with a protecting the host from the memories of Joran ' s joining , and all records of his joining were purged from Trill database s . Public records stated that Joran was killed fleeing the scene of the murdered doctor , while Torias was said to have remained in a coma for the six months of Joran Dax ' existence , the symbiont being removed when his isoboromine levels dropped to a dangerous point . ( ) Dax ' memory block began to erode in early 2371 , causing severe trauma to the Dax host of that time , Jadzia . The block was removed , allowing Jadzia to reconcile the memories within herself . The information was kept secret from the general populace because it would reveal that the ability to be joined was far more widespread and possible than the Commission publicized , resulting in potential hosts struggling to acquire the ' prized ' symbionts such as Dax . ( ) During Jadzia ' s " zhian ' tara " in 2371 , Sisko agreed to embody Joran ' s memories and personality . Aware of the dangers , the ritual took place with Sisko in a holding cell . Even so , Joran proved extremely dangerous , and attempted to attack Jadzia , taunting her about her feelings of inadequacy in holding the Dax symbiont . Unable to penetrate the holding cell force field , Joran kept in contact with it , hurting Sisko . He would trick Dax into thinking Sisko was back in control , and when she let him go , he ' d attack her . Sisko regained control and Joran was eventually returned to Dax . ( ) In 2375 , Ezri Dax performed the Rite of Emergence , which brought forth Joran ' s memories and personality for her to interact with so she could find who was murdering the officers on DS9 . Joran provided Ezri with valuable assistance in tracking down Lieutenant Chu ' lak , who had committed three murders , but his constant attempts to encourage Ezri to kill the murderer in question ( in addition to an innocent person who " almost " fit the profile ) did little to endear him to his distant successor . Once the case was solved , Ezri sent Joran back into her mind , accepting she would have to be more careful than the previous hosts because he was more a part of her than of the others . ( ) After being ruthlessly interrogated by the Breen later that year , Ezri delirious ly rambled , " " I ' m not like you , Joran , I ' m not a murderer . " " ( ) Background information . Joran was played by Jeff Magnus McBride in " Equilibrium " , Leigh J . McCloskey in " Field of Fire " , and Avery Brooks during Jadzia Dax ' zhian ' tara in " Facets " . Tony Dow commented : " " The casting sessions for Joran were endless . Joran is a pretty complex character . The actor had to play him with a sort of crazed unpredictability , but he couldn ' t be such a jerk that Ezri would just put him back in the bottle . Leigh didn ' t have the scariness of appearance that we ' d initially anticipated but he ' s such a terrific actor that it worked out well " " . ( " " ) According to his stardate of birth , Joran was born some time before , in 2265 or a few years prior . According to the for , Joran was pronounced as " juh - RAN " . " Equilibrium " suggested that Curzon never knew of Joran , due to the memory blocks , while " Field of Fire " clearly states that he did . Joran also appears in the short story " Allegro Ouroboros in D Minor " in " The Lives of Dax " .