Unimatrix Zero Unimatrix Zero was a virtual construct and resistance movement created by a group of Borg drone s . After it was shut down , drones formerly connected to Unimatrix Zero continued to oppose the Borg Collective in the Borg Civil War . This construct was created by Borg who had a recessive gene tic mutation which gave them the capability to create this virtual world and to live in it , free from the hive mind as individuals , while regenerating in their alcoves . Individual Borg were connected to Unimatrix Zero via their interlink frequency , based on a tri - axillating modulation . This modulation made sure that not even the Borg Queen could disrupt their link . How Unimatrix Zero came into existence was unclear . Some believed it started with a random malfunction during the assimilation of a single drone which eventually spread to other drones . The genetic mutation was rare and only one in a million drones possessed it , whether or not they were adults or children , still in a maturation chamber . Although this mutation made it possible for a drone to live in Unimatrix Zero , they only were aware of it as long as they were in it . When a drone ' s regenerative cycle ended it could not remember the experiences gained while serving the Borg Collective . Entering Unimatrix Zero was only possible when a drone entered its regenerative cycle . For non - Borg entering was only possible via a mind meld with a drone in its regenerative cycle . The number of Borg drones who made up Unimatrix Zero were estimated to be about twelve thousand or more . In Unimatrix Zero a drone could opt to assume the appearance it had exhibited before assimilation into the Collective , and most choose to do so . A drone was aware when its regenerative cycle would end , giving it the opportunity to say goodbye to others before exiting to serve the Collective . Once inside the Unimatrix a drone could call another drone in its regenerative cycle . Only drones who possessed the genetic mutation could be called to and enter the Unimatrix , which served to let them regain some part of the lives and individuality they had prior to assimilation . Although a drone could be killed within Unimatrix Zero , he or she would enter it again during the next regenerative cycle . Unimatrix Zero was undetected by the Borg Collective until 2376 . In this year the Borg Queen found their interlink frequency . Although the Collective could detect the drones with the genetic mutation , which they saw as an illness , their method was slow and would take centuries to find every drone with the mutation . By examining the cortical array of drones with the genetic mutation the Queen found their interlink carrier band , which she was able to use to send Borg drones to Unimatrix Zero in order to attack its occupants . In the following year Axum , one of the drones with the mutation , called Seven of Nine back into Unimatrix Zero to help them fight the Borg . A nanovirus was devised by them which would mask the biochemical signature of the genetic mutation , making it impossible for the Borg to detect them . But they could not introduce the virus into the Collective without Seven ' s help ; as the only member of Unimatrix Zero not part of the Collective , Seven was the only one who could retain the memory of Unimatrix Zero when she wasn ' t regenerating . Seven of Nine , being a member of Unimatrix Zero for almost eighteen years , asked Captain Kathryn Janeway for help . It was Janeway who suggested to Axum to begin a resistance movement to undermine the Borg ' s control over them once their mutation could no longer be detected . After Janeway agreed to help , the nanovirus Axum designed was modified by the The Doctor so it would also nullify the cortical inhibitor , so drones with the mutation would keep their memories about Unimatrix Zero while being part of the Collective . Inside Unimatrix Zero , drones sent by the Borg Queen were being fought . Although the Borg Queen warned Janeway not to interfere – and even tempted her with an offer to send the back to Earth – Janeway went through with her plan and , after allowing herself , Tuvok and B ' Elanna Torres to be partially assimilated , succeeded in infiltrating the central plexus of a Borg cube and releasing the nanovirus . After the nanovirus was released , the Borg Queen began to lose contact with drones possessing the genetic mutation . In an attempt to force Captain Janeway to give her an antidote for the nanovirus , the Queen interrogated her and destroyed entire Borg vessels in which she could no longer hear only two or three drones . Despite this , Janeway still refused . The Borg managed to reprogram the nanovirus to shutdown the autonomic functions of the drones with the genetic mutation , making them die within minutes . The Queen herself would release it from within Unimatrix Zero . When Janeway was told by the Queen she had to make a decision , make the drones return to the Collective or they would be killed , she conferred with her First Officer Commander Chakotay via " Voyager " s holographic system and told him Unimatrix Zero could no longer exist . To save the drones with the genetic mutation it was necessary to destroy Unimatrix Zero . This was done by the " Voyager " and a Borg sphere under the command of the Klingon , an occupant of Unimatrix Zero . Both starship s had reconfigured their deflector emitters to disrupt the interlink frequency and so destroyed Unimatrix Zero . Although this resulted in the destruction of Unimatrix Zero , it also resulted in the creation of a ' fleet ' of multiple Borg vessels under the control of former drones , these drones going on to make up the resistance movement against the Borg ; Unimatrix Zero was gone , but the drones themselves had survived . It is unknown if any of those drones did succeed , although Korok promised to stay in contact with the " Voyager " . ( ) " In an alternate timeline where " Voyager " took 23 years to return to Earth , Admiral Janeway was questioned about the rebellion by a cadet . " ( )