The forced merging of the humans and the mostly decayed Caeliar results in the creation of the first Borg. The gestalt group mind is perverted to become the collective, driven by Sedin's desperate hunger and need to add the strength, technology, and life-force of others to her own.
While they originated from the Delta Quadrant, the actual history of the species known as the Borg was quite spotty in Star Trek canon. During the events of 1996's Star Trek: First Contact the Borg Queen mentioned that the species started as normal sentient life but had eventually adapted using cybernetic technology.
The Borg queen was a member of Species 125. Note: This is NOT a PC and NPC rated species. Species 125 is the Borg designation for a species as yet unknown to the Federation outside of the Collective. However, it is likely that this species has been completely assimilated.
Although any further details would be purely speculative, it fits with the established canon and timeline that the ancient Romulans could've started experimenting with artificial life forms, accidentally created the Borg and realized the terror their experiments had given rise to.
How Was The First Borg Created? Who Made Them? What Is Their Purpose? - Explored
Did Q create the Borg?
At that time, writer and de facto showrunner Maurice Hurley intended for the Borg to be introduced much earlier, and possibly as an insect race. Hurley was also the writer of "Q Who?" and the person who, basically, created the Borg.
Annika was placed into a Borg maturation chamber for the next few years, during which time she joined the collective. Following this, she was a Borg drone and assimilated individuals from a number of species, including a crew member from the USS Melbourne at the Battle of Wolf 359 on Stardate 43989.1.
The borg collective as a whole didn't join the federation it was just a small splinter group of the borg that joined the federation the main borg collective is still an enemy of the federation and would mostly likely never join the federation instead would keep on trying to assimilate the federation.
Could "Q" or a "Founder" be assimilated by the Borg? Yeah, maybe. There seem to be some species like species 8472 though, that are just incompatible with assimilation, but for the most part they can usually find a way to assimilate many species.
The Borg discover Species 8472 in the Delta Quadrant and try to assimilate its biotechnology, which is more advanced than anything the Borg have seen. The Borg quickly realize that Species 8472 is immune to assimilation and that contemporary Borg technology is no match for it.
Only one Queen exists at any given time; when she is destroyed, a new Queen takes her place. In Star Trek: Voyager, it's revealed that the Borg Queen isn't a singular entity, but the name given to any that serves as its host, possessing all previous Queen's collective consciousness.
The society of species 1 consisted of female drones and a queen for each colony. There were males, but they were only used for mating, much like ants on earth. Through millions of years, species 1 developed a collective consciousness on the colony level, with each colony having its own.
The Borg Homeworld is Earth. That is why the Borg have such a hardon for Earth that they put resources into capturing Earth on the other side of the galaxy and assimilating humanity rather than continuing their geometric expansion out from the Delta Quadrant.
The origin of the Borg is never made clear, though they are portrayed as having existed for hundreds of thousands of years (as attested by Guinan and the Borg Queen).
Whilst the Borg are primarily a nomadic space-bearing race they do however occupy planets with a typical population of nine billion drones primarily for the purposes of strip-mining the planets of all natural resources.
The episode first aired in broadcast syndication on May 5, 1989. It was written by executive producer Maurice Hurley and directed by Rob Bowman. "Q Who" marked the first appearance of the Borg, who were designed by Hurley and originally intended to appear in the first season episode "The Neutral Zone".
As far as I know, the "Bad Borg" hail from the Delta Quadrant, and though we don't know just how old that collective is, it is ancient. The "Good Borg", Jurati's Borg, were established in the Alpha Quadrant in the 21st century, when the queen from the alternate timeline and Jurati merged.
Q. The Q are potentially the least likely to get assimilated, for not just one reason but two. Firstly, their near omnipotence and god-like powers would make it almost impossible for a Borg, or even all Borg working together, to capture a Q.
If they thought the Xenomorphs biological uniqueness (rapid growth, silicon based biology, acid blood etc) was worth assimilating, they would likely succeed. Being non-technological the Xenomorphs would be helpless against a determined Borg attack.
The A.I. at work in Star Trek: Discovery has employed similar methods, has a similar motive, and even shares style points with the Borg. It's a technology-based entity that despises all organic life and seeks to have the galaxy all to itself (and it's also currently thwarted by humans).
By the time of the series finale, "Endgame", The Doctor had managed to remove the implant, allowing Seven to pursue a relationship with Chakotay. The alternative future seen at the start of the episode showed that Seven and Chakotay were eventually married, but she died while Voyager was still travelling home.
The Borg, while still a powerful threat, are nothing compared to this type of power. The Q are not only able to defeat their entire race without breaking a sweat, but can also eradicate any trace of their existence altogether.
No. Nor are they actually that similar to one another. The Borg are a gestalt entity - a being formed by the combined intelligence of numerous independent organic minds. Control is a single AI that occasionally uses hollowed-out organic bodies as puppets to disguise itself.
