Tieran Tieran was a strong - willed male who became Autarch of the Ilari in the 22nd century . According to Tieran himself , he was a sickly child who doctor s believed would not live past his first year . His parents abandoned him because of his sickly nature , and he was left to survive on the streets . Tieran was an able military leader who after shepherding his people through difficult time s , serving as a uniting force for his people , became manipulative , power - hungry , paranoid , and ruthless during a time of peace . He was eventually overthrown ; the new Autarch ' s descendants still ruled as of 2373 . He was able to continue to exist for over two hundred year s by transferring his mind to host bodies via a sophisticated neural implant . His goal was to reclaim the ancient Ilari title and rule the homeworld forever . He had enough of a reputation that his hosts were apparently willing to accept his consciousness even knowing that their own lives would be essentially lost . When his most recent host was beamed aboard the after being rescued from a disabled starship , his host body died , but not before he transferred his consciousness to Kes , who was tending to the host body ' s injuries in sickbay . In Kes ' body , Tieran returned to the planet and staged a " coup " that toppled the government . Tieran killed the then - current Autarch and abducted one of his son s , Ameron . Tieran worked to build alliances with various people by exchanging favors and was not above using sex to get what he wanted . In Kes ' body , he attempted to seduce Tuvok and resume his marriage to his wife . With his mental strength combined with Kes ' mental powers , Tieran became extremely powerful , to the extent that he could inflict pain on others through mental telepathy , as he did to Resh , his general , who doubted him due to the apparent weakness of his current host before he demonstrated Kes ' s powers . These enhanced powers had side effects . Kes continued to fight Tieran for control of her body , resulting in a series of severe headache s and bouts of split personality as Kes tried to gain control . After Tuvok was captured in a failed rescue attempt , Tieran interrogated Tuvok trying to use Kes ' mental powers to get the information he desired . This failed when Tuvok was able to initiate a mind meld and speak directly to Kes , who told Tuvok she was fighting Tieran for control . Tuvok expressed his confidence in Kes and assured her that he was fighting alongside her until Tieran broke the link . Tieran then sent a message to " Voyager " informing them to stay out of his affairs , owing them for saving his life . Afterward , Tieran hosted a celebration for his marriage to Ameron ( which he considered a political alliance for his benefit ) . But when " Voyager " and a number of loyalists advanced on the capital , Tieran refused to hide in a bunker and ordered everyone to celebrate rather than fight . However , he underestimated the " Voyager " crew , who sent a landing party and attacked the Imperial Hall . With Chakotay providing cover fire , Neelix was able to place a synaptic stimulator on Kes , but not before Tieran had transferred to Ameron . Kes placed the device on Ameron and Tieran was killed . ( )