The Borg are a fictional pseudo-race of cybernetic organisms depicted in the Star Trek universe. Whereas cybernetics are used by other races in the science fiction world (and in recent times the real world) to repair bodily damage and birth defects, the Borg voluntarily submit to cybernetic enhancement as a means of achieving what they believe to be perfection (they also force their idea of perfection on others).
Aside from being the main threat in Star Trek: First Contact, the Borg also play major roles in The Next Generation and Voyager television series, primarily as an invasion threat to the United Federation of Planets and the means of return to the Alpha Quadrant for isolated Federation starship Voyager, respectively. The Borg have become a symbol in popular culture for any juggernaut against which "resistance is futile". The Borg manifest as cyberneticallyenhanced humanoid drones of multiple species, organized as an interconnected collective, the decisions of which are made by a hive mind, linked to subspace domain. The Borg inhabit a vast region of space in the Delta Quadrant of the galaxy, possessing millions of vessels and having conquered thousands of systems. They operate solely toward the fulfilling of one purpose: to "add the biological and technological distinctiveness of other species to [their] own" in pursuit of perfection. This is achieved through forced assimilation, a process which transforms individuals and technology into Borg, enhancing - and simultaneously controlling - individuals by implanting or appending synthetic components.