The Borg are a fictional pseudo-race of cybernetic organisms depicted in the Star Trek universe. 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 cybernetically enhanced 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 otherspecies to their own" in pursuit of perfection.