Only a small number of these so-called alien colonists (at least, so far as we know) manage to resist infection, using their latent shape-shifting abilities to seal off every body orifice to prevent Purity from entering their systems. In the meantime, the newly reconstituted aliens colonize as many other planets in the cosmos as possible, spreading the virus and strengthening their ranks. It is at this stage that humanity is viewed as the perfect crop to be harvested, and plans are made to return to Earth – presumably once the ice age retreats – to reclaim it. It seems that the two lifeforms evolved into symbiotic partners, with the aliens becoming Purity’s permanent hosts and Purity becoming the main reproductive method for the aliens (a host is infected and then used as an incubator for the alien offspring, which consumes the host’s body when it is birthed). It is unknown whether the alien race was present on Earth along with their early vessels, but, at some point, they came into contact with Purity and became almost entirely subsumed by it. Purity flourished as the original inhabit of the planet until the next ice age began extreme cold is one of the virus’s few weaknesses, and it was forced to abandon all of its various hosts and travel deep underground, where it eventually hitched another ride – this time within oil, another medium that can be perfectly manipulated (hence Purity’s nicknames as the Black Oil or the Black Cancer throughout the show). This virus is sentient and is able to function by invading a host species and transforming it into an alternate, perhaps more ideal (for defensive purposes) form.
Also arriving on that meteorite was an already-evolved lifeform, an alien virus that has since come to be called Purity.
(Occasionally, a human is born with at least some of this DNA activated, giving him such abilities as telepathy the series refers to these individuals as being “more human than human.”) It remains unknown why these extraterrestrials created humanity or whether they’re responsible for other civilizations on other planets, as well.
It would seem that the aliens shaped man more or less into their image physically, as well, although evolution would take its course, turning off most of the aliens’ physiology and rendering it into what scientists now call junk DNA. The building blocks of life may have arrived on Earth thanks to a meteorite (probably originating from Mars), but it was a race of extraterrestrials that made mankind into what it is today – a series of UFOs arrived on the planet millions of years ago, covered in verses that would eventually find their way into all of man’s various religious texts and written in a language that would ultimately reemerge as a Native American dialect. Season premieres and finales always focus on the mythology arc, with the premieres typically continuing on the events of the previous seasons finale. There are 5 episodes in the new mini-series, bring the total to 73.
There are 68 episodes in the Mytharc from the original run (including the movie and the feature length finale as one episode). Furthermore, as his role expanded, Walter Skinner appears in more Monster of the Week episodes. It should be noted that some key mythology characters also appear in Monster of the Week episodes notably, Deep Throat, X and the Cigarette Smoking Man each appear in episodes which involve government activities. Deaths of, or betrayals by, key supporting characters.The presence of black oil, Alien Bounty Hunters and/or the Syndicate.Revelations about the Mulder and Scully family.The continuation of the X-Files as well as Mulder's and Scully's assignment to the X-Files unit.The mythology, or mytharc, is the overarching story developed in a series of episodes of The X-Files where Mulder and Scully investigate and expose an international conspiracy by an organization known as the Syndicate to develop a human/alien hybrid and suppress knowledge of the existence of extraterrestrials who plan to colonize Earth. Samantha Mulder's abduction, the impetus for Mulder's research into the paranormal.