Originating from the Delta Quadrant – some 7,000 light-years past explored Federation space the Borg are a vast collection of humanoid looking drones or cybernetic organisms collected travelling through space, linked in a hive mind called the Collective and have a singular goal, namely the consumption of technology, rather than wealth or political expansion as most species seek.
The Borg annex any useful technology and knowledge of other species to the Collective via a process of assimilation, forcibly transforming individual beings into drones by violently injecting microscopic machines, or nanoprobes into their bodies and surgically augmenting them with cybernetic components.
Born humanoid, they are almost immediately implanted with bio-chips that link their brains to a collective consciousness via a unique subspace frequency emitted by each drone. This collective consciousness is experienced by the Borg as thousands of voices; they are collectively aware, but not aware of themselves as separate individuals. Consequently, they never speak in singular pronouns, referring to themselves when required as merely “Third of Five”. The Borg ingest only energy to drive their technological system via an energy conduit port. Their bio-chips synthesize any organic nutrients needed.