Annorax Annorax was a Krenim officer and a brilliant temporal scientist , who , utilizing his understanding of time , embarked on a mission to restore the Krenim Imperium to power . In the 2170s , the Krenim Imperium was in decline , due to losing a war with the Rilnar . At that time , Annorax was living on Kyana Prime with his wife . Realizing that their war with the Rilnar could not be won by conventional means , Annorax developed a weapon capable of pushing elements ( anything from a molecule to a civilization ) out of the space - time continuum , thereby creating an alternate timeline where that element never existed . If used against a species , it created a causality paradox in which history changed as a result of the non - existence of that species . With this weapon as the centerpiece , he constructed the Krenim weapon ship , assembled a crew , and set about restoring the Krenim Imperium to its former glory . The first target eliminated by Annorax was the Rilnar , and initially his weapon achieved spectacular results . However , he had failed to take into account all the consequences of the temporal incursion , one of which was a plague ( due to the loss of a crucial antibody that the Rilnar had contributed to the Krenim genome ) that devastated the Krenim . To correct this error , Annorax ordered a second incursion , and in doing so accidentally eliminated the colony on Kyana Prime , and with it his beloved wife . A lock of her hair was the only trace Annorax had left . Stricken by grief , Annorax struggled in vain over the next two centuries to restore Kyana Prime . He oversaw the repeated disappearance and restoration of billions of people over thousands of worlds , but he was never able to accomplish the full restoration of either the Imperium or his wife . From each civilization he removed from history , Annorax collected a sample of their culture to be stored aboard his ship . This included the Malkoth and the Alsuran s . As the year s passed Annorax came to believe that time itself had " colors " and " moods " , and that it was punishing him for his hubris by withholding his wife from him . Therefore , irrespective of his guilt over eliminating so many civilizations , he refused to relent in his mission until he forced time to return his wife to him . Meanwhile , there was growing frustration and dissent amongst Annorax ' s crew over their repeated failures and their prolonged separation from their families . This tension escalated dramatically in 2374 , when Annorax refused to end their mission after they achieved an unprecedented 98 % restoration following the erasure of the Zahl . His reasons were obvious enough : part of the 2 % that had not been restored included Kyana Prime . His subsequent incursion , against the Garenor , was a disaster due to the ' s temporal shield s . Annorax was able to abduct Chakotay and Tom Paris to the weapon ship , though " Voyager " escaped his attempt to erase it from history . Since he was unable to locate " Voyager " , Annorax proposed a collaboration to Chakotay and Paris , where they would find a way to use the temporal weapon to aid both the Krenim and " Voyager " without destroying any additional species . Chakotay was at first sympathetic to Annorax ' s situation , though he decided to work with Paris to foment a mutiny with Annorax ' s first officer Obrist , after Annorax eliminated another species , the Ram Izad . Shortly after , Obrist disabled the ship ' s temporal core during an attack by " Voyager " and five Mawasi and Nihydron ships . Annorax ordered " Voyager " to be destroyed , but he was too late as Captain Kathryn Janeway rammed her ship into the weapons ship . But as Annorax witnessed his wife ' s lock of hair vanish into the mists of time , he suddenly realized that his final goal was about to come true . The collision destabilized the temporal core , erasing the weapons ship itself from history . This restored the original timeline before Annorax had constructed the ship , reuniting Annorax with his wife on Kyana Prime . In this restored timeline , Annorax decided not to continue his efforts to build the ship , deciding to spend time with his wife instead . ( ) Appendices . Background information . Annorax was played by actor Kurtwood Smith who filmed his scenes for " Year of Hell " on Friday on Paramount Stage 9 and for " Year of Hell , Part II " between Friday and Tuesday on Paramount Stage 9 and 16 . His uniform from these episodes was later sold off on the It ' s A Wrap ! sale and auction on eBay . According to the , Annorax ' s name comes from the main character in Jules Verne ' s " 20 , 000 Leagues Under the Sea " , Professor Pierre " Aronnax " , though parallels can be noted with the character of Captain Nemo from the same story , including Tom Paris at one point referring to Annorax as " Captain Nemo " . Since Annorax built the weapons ship two hundred years prior to this episode , the scene of him planning a temporal incursion at end of the episode should have also taken place two hundred years prior . The temporal consequences of this are not clear . Also , since the weapon - ship erased itself from history , it is likely that in the new timeline , the ship will never be built . Apocrypha . In the novel " A Pocket Full of Lies " , it is revealed that , in the new timeline , Annorax ' s temporal equations established a strict set of regulations preventing others from manipulating time to the extent that he did in the original course of events , resulting in a Krenim Imperium that is fundamentally more benevolent and reasonable but nevertheless still willing to tamper with history to ensure their supremacy . In the game " Star Trek Online " , set in 2410 , his technology was used to phase shift the remnants of the Krenim Imperium and hide them from a Vaadwaur invasion fleet . It is revealed that Annorax was able to design the ship , and that records showed what he had tried to do in the events of " Year of Hell " . With the aid of the Delta Alliance ( the Federation , the Klingon Empire , and the Romulan Republic , as well as their allies in the Delta Quadrant ) , the Krenim are able to construct a working prototype , christened K . I . S . " Annorax " after its designer , for use against the Iconian s .