<P> The Unicomplex is a location in the fictional Star Trek universe that is considered the central base for the Borg pseudo-race . It is located in an unknown area of the Delta Quadrant and is the center of all processing activity for the Borg collective, as well as the home of the Borg Queen . The Unicomplex resembles a patchwork - like collection of thousands of cubes, connected by assorted conduits and transportation hubs . Borg cubes frequently cross into and out of the Unicomplex on their way to other parts of the galaxy, using transwarp conduits . The Unicomplex primarily appears in the episodes leading towards the conclusion of Star Trek: Voyager . The Unicomplex was destroyed in 2378 after the Borg Queen assimilated a neurolytic pathogen from the future by Admiral Kathryn Janeway, who had traveled back in time, as seen in the Star Trek: Voyager series finale, "Endgame". </P> <P> Also referred to as the "hive mind" or "collective consciousness", the Borg Collective is a civilization with a group mind . Each Borg individual, or drone, is linked to the collective by a sophisticated subspace network that ensures each member is given constant supervision and guidance . The collective is broadcast over a subspace domain similar to that used by the transporter . Being part of the collective offers significant biomedical advantages to the individual drones . The mental energy of the group consciousness can help an injured or damaged drone heal or regenerate damaged body parts or technology . The collective consciousness not only gives them the ability to "share the same thoughts", but also to adapt with great speed to defensive tactics used against them . </P> <P> Before the movie Star Trek: First Contact, the Borg exhibited no hierarchical command structure, instead using a structure with no control center and distributed processing . First Contact introduced the Borg Queen, who is not named as such in the film, but is referred to by that name during the credits . The Queen is played by Alice Krige in this film and in the finale of Star Trek: Voyager, "Endgame". The character also appeared in Voyager's two - part episodes "Dark Frontier" and "Unimatrix Zero", but was portrayed by Susanna Thompson (due to Krige's unavailability during the filming of those episodes). Whether or not all of these appearances represent exactly the same Queen is never confirmed . </P> <P> The Borg Queen is the focal point within the Borg collective consciousness and a unique drone within the collective, who originates from Species 125, who brings "order to chaos", referring to herself as "we" and "I" interchangeably . In First Contact, the Queen's dialogue suggests she is an expression of the Borg Collective's overall intelligence, not a controller but the avatar of the entire Collective as an individual . This sentiment is contradicted by Star Trek: Voyager, where she is seen explicitly directing, commanding, and in one instance even overriding the Collective . She also identified herself as having originally been a member of Species 125 . The introduction of the Queen radically changed the canonical understanding of the Borg function, with the authors of The Computers of Star Trek noting "It was a lot easier for viewers to focus on a villain rather than a hive - mind that made decisions based on the input of all its members ." First Contact writers Brannon Braga and Ronald D. Moore have defended the introduction of the Queen as a dramatic necessity, noting on the film's DVD audio commentary that they had initially written the film with drones, but then found that it was essential for the main characters to have someone to interact with beyond mindless drones . </P>

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