[@Arawak][@darkandstar]Don't worry, the nekos are only one of three races my NS will have, here's the species bit from my NS:

Also, these are the first drafts, so do expect changes to be made and such. If people really hate my stuff, then I'll just drop it.

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[h2][sub][i][u][b]Species:[/b][/u][/i][/sub][/h2]

[hider=Fyrite]
[img]https://s-media-cache-ak0.pinimg.com/236x/10/b6/85/10b685fdd16a9c7c62b7421248aa70cc.jpg[/img][img]https://s-media-cache-ak0.pinimg.com/236x/60/03/00/60030072f423e234045a3c7c0a4c7f98.jpg[/img]

Humanoid, cat-like beings, the Fyrite have humanoid skeletal structures as well as some other similarities such as five fingers on a hand and red blood, however they had evolved from more feline ancestors. The most obvious difference is their tails and ears, which are both very cat like in nature; the ears of a Fyrite is highly sensitive to sound and very receptive (it should also be noted that they have no "human-like" ears on the side of their heads, their cat ears are their real ears). The skin color is typically that which resemble's humans and tans, albeit slower. However, it is rare to see a tanned Fyrite as they are actually quite susceptible to skin cancer and related diseases.

Their life cycles are remarkably quick, reaching sexual maturity around the age of 8, mental maturity around at the age of 14 and reach full adulthood at 16 before becoming elderly at age 50 with death typically happening in the 60's and 70's. As a sort of offset for their otherwise quick lives, the Fyrite's reproduction cycle is rather unique, sharing similarities with cats. Their pregnancy cycle is only a mere 3-4 months with anywhere from one to six children per birth. They can also have multiple births a year with little consequence.

Curiously enough, they are also able to breed with literally any other race, however the child will always look like the mother-race with some similarities to the father's race. This is due to as the Fyrtie provides two copies of their genes, one untouched and one modified to resemble the other race in a process known as "Communion" where the Fyrite consciously attunes their nervous system to their partner's, sending and receiving electrical impulses directly through the skin, almost uniting nervous systems during intercourse.

Fyrites are also seen as one of the most promiscuous races, in part owning to their unique reproductive system and Communion, but also their flexible homeostatic abilities which is presumably why they can reveal otherwise revealing clothing with little temperate discomfort. While some will say that the promiscuity of the Fyrites is a stereotype, there is no denying that compared to other species, they are quite hyper-sexual with lewdness almost engrained into their culture and being. Some might say that Fyrite are capable of attracting and arousing any race through looks or through pheromones, but at the end of the day, there are probably a good deal of races whose young would love a night or two with some Fyrites.
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[hider=Siari]
[img]http://vignette3.wikia.nocookie.net/xcom/images/3/37/Concept_-_Ethereal4.jpg/revision/latest/scale-to-width-down/605?cb=20121031031023[/img]

Perhaps the complete opposite of the Fryrites, the Siari are a race of ancient, long-lived beings while multiple arms and bright orange blood who stand at an impressive 7-8 feet tall on average. They lay a (debated) claim to the most intelligent beings, at least in their own eyes. Infamously snooty and arrogance, its could be said that it was their hubris which lead to the events that caused the current state of the MF. With four-fingered hands and long, lanky limbs, Siari are undoubtedly frail and their lack of significant muscle mass means that they also don't have great endurance or strength or speed.

The Siari have rubbery blueish-grey flesh, often tightly pulled across their thin bones. The have no internal lungs, instead having gland-like structures at the top of their heads and shoulders which pull oxygen from the air around them. As such, these areas are often mislabelled as "glowing bits" while in truth they are simply where the most oxygenated (thus brightest) blood is. Also as such, the Siari have quite the mask fetish out of necessity, in order to both protect their vulnerable heads (which also houses their enlarged brains) and to help purify the air around them, making them suitable for respiration.

[img]http://vignette3.wikia.nocookie.net/xcom/images/2/2a/Concept_-_Ethereal.jpg/revision/latest?cb=20121026171255[/img]
Several styles of Siari masks

Capable for living centuries at a time, its not uncommon for some to even live up to a millennia or more assuming ideal living conditions are met, something that's rarely seen on the Memoria Fleet. Slow to age and mature, these creatures often only produce one or two offspring in their entire lives, the most fertile ever recorded for intraspecies breeding is 5 children. Of course, when breeding with a Fryrite, their offspring potential skyrockets but the natural low arousal rate, there is still a comparatively low rate.

While some might expect the Siari to maintain something of an "upper echelon" in society due to their high intelligence and long lives, its not quite so much the case, namely as the Fyrite easily out number them and the Aphid... well they're the Aphid. In fact, most Siari take less of a "leader" stance and more of a "mentor" stance, often working as teachers, aids, sages; only those with great drive, zeal and amibtion work in positions of power like company CEOs and politicians but by no means dominate the respective landscapes.

Benefiting their minds, it can be said that even if the Siari are the ones who caused the current situation, they are without a doubt the original founders of the old empire, being the first to venture into space and colonize as well as making AI robotics, of the most notable are the [url=http://vignette1.wikia.nocookie.net/xcom/images/f/fe/XCOM2_Archon_ConceptArt.jpg/revision/latest?cb=20160222005016]Archons[/url], strange looking machines that no one quite remembers how the design was created as they certainly do not resemble any Siari. Some older Siari tell tales on how they first discovered the Fyrites when they where simply glorified cat tribes and the Aphids as giant, unintellignet bugs before genetically modifying them into what they were today for original use as soldiers and sex slaves. However, this tale has two major flaws: there was a very small market for sexual industries within native Siari soceities and the Archons where the ones who

Siari are also [i]very[/i] long term thinkers, not put off by what would seem to most races as catastrophic failures or losses and more than willing to wait a few decades or even centuries for investments to pay off. That said, they are not oblivious to failure and there are times which they will act more impetuously.
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[hider=Aphid]
[img]http://2.bp.blogspot.com/-uFmIryh2ZLM/UHeZnaR-xBI/AAAAAAAAAj0/VUZrgCcTUe4/s1600/Cryssalid.jpg[/img]
Aphid Drone
[img]https://fanbojizycie.files.wordpress.com/2016/02/2999862-2912254-xcom2_chryssalid_screenshot_01.jpg[/img]
Aphid Scourge

Perhaps the most alien and fear-inducing race aboard the Memoria Fleet, the Aphid are sometimes referred to as "hyper evolved bugs" as that's what they basically are. The Aphid in short are the stuff of nightmares, swift giant bugs that stand as tall if not taller than most bipedal species that whisk about on long, claw-like legs, covered in hard chitin and can are extremely venimous. They are mindless bugs with a hunger to devour entire worlds.

Or so the Siari and the Fyrite like to say.

While that description was certainly true at one point with some bits of it lingering on to this day, one could call modern Aphid more "civil" or "docile". Sure they still look creepy as hell and will probably make you shit your pants if you saw one in a dark hallway, but due to a lack of a hivemind, they no longer feel a compulsory need consume biomass. They still do possess quite an appetite if left unchecked and are still quite aggressive however. As such, the two other races of the MF like to toy with outsiders of how they "live with savage monsters on a daily basis", both as an ego boast and to chuckle as outsiders fearfully keep watch for such creatures as they make their way through ships.

Of course, the Aphid have their own take on this seeing as they are intelligent beings who have their own language based around clicks and chirps (although their "yelling" sounds a lot more like yodeling for some reason); the Fyrite and Siari inhabitants can understand said chirps and clicks in a way similar to how people understand droid beeps in Star Wars (the Fyrite's sensitive ears can pick up the variations in tone and thus they can "learn" the language while Siaris simply have translators in their masks) and the Aphids have the ability to understand the other speech patterns. In terms of actual intelligence, they aren't nearly as developed as the other two, but make up this lack of understanding through a pheromone-based collective intelligence. Basically, the more of them are in an area together, the smarter each individual becomes. Funnily enough, some of these pheromones can also put Fyrites into heat.

Born of eggs, the Aphid larva and hatchlings almost resemble purplish soft-shelled lobsters before they quickly begin to grow to full size. They can also completely forgo the hatchling process and come out as a young Drone should they have proper "incubation" (ie a machine or even a living host), but such process is nonexistent in the MF. Being genderless, Aphids will seek to grow and propagate. In the past they used to either seek out a secluded area or an unlucky host for their eggs to be directly transplanted into, but now a days there are Fyrites who are more than willing to act as surrogate mothers (they will simply deliver the eggs and not have to undergo the chest-bursting method of delivery).

Younger Aphids are called "Drones" and are the most typical of Aphids species. As they age, their chitin hardens and forms more spikes and plates as their claws and tips begin to turn a bright orange, the once glowing yellow eyes turn blood red with teeth and external mandibles becoming more prevalent. These older Aphids are commonly referred to as "Scourges", referencing their brutal past.

Although the Aphid are technically immortal, many of the older ones will either commit suicide or request death as they will start to feel an instinctual "completion" in their life cycle once they have laid enough eggs. This is most likely residual commands from the hivemind which told them that those too old to be as efficient as they once where, should give themselves up to feed the younger generations. It should come as no surprise that Aphids are veracious omnivores to the point they can be seen as space goatbugs.

For those who are still curious on where the idea that Aphids are venomous and how they can spit poison; they can't. Its one of those things that the Fyrites and Siaris made up. However, their bodily wastes (which very slowly builds up over the course of months or even years) is known to be highly toxic as it literally everything even their stellar digestive systems can't breakdown.   
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Happy now?

EDIT: I realize that there might be quite a bit of OP potenital, expect that to be sorted out once I have some more stuff written and have time to go back and fix stuff.