Of the space-capable humanoid alien species encountered by the Destiny expedition,
the Nakai (or blue aliens) are particularly noteworthy in that they have been aware of Destiny for some time.
Possibly impressed by her automated defences, as Destiny's onboard A.I. successfully repelled all their
attempts to gain access, the ship has become, according to Dr. Rush, somewhat of an obsession to them.
"I don't think they want to destroy us," Dr. Rush remarked.
"What they really want is Destiny. Probably only care about us because we recently came aboard."
But it should be noted that it is not clear as to the Nakai's intentions were they to actually capture and occupy the Destiny.
The first known encounter with the Nakai occurred indirectly while exploring the Gravel pit planet,
during which the away team stumbled upon a crashed alien shuttle.
Naturally, Dr. Rush was eager to explore an alien spaceship on the other side of the Universe.
When Rush regained consciousness after being left behind on the planet by Col. Young
(in retaliation for using Sgt. Spencer's suicide to frame the colonel), he, in his own curiosity,
while perusing the crashed shuttle, inadvertently activated what he later realized was a distress beacon.
As Rush was next seen aboard the alien's vessel,
the distress signal didn't fall upon deaf ears (or some analogous sense organ).
Following his rescue and return aboard Destiny, Rush and a few others gathered in the ship's mess,
presumably to catch up after his whole ordeal.
"What happened when the aliens brought you on their ship?" Asked Eli.
Rush answered, "To be honest, I don't remember that much. The few times I was conscious, they were probing my mind."
Looking as though there were...things he wished badly to forget.
"It's something," he said, "I'd rather not think about, really."
Rush proved to be for the aliens a rather frustrating captive, in that he displayed a surprising ability to resist their probing.
"He used their own neural interface against them," said Chloe, "getting what he needed so he could escape."
"Location of the fighter bay," Rush continued, "basic operating systems."
Furthermore, in using the neural interface, Rush was also able to learn of the Nakai's ambition regarding the Destiny.
"What they really want," Rush warned, "is a way past our defences, trying to find out what secrets she might hold."
They are a determined species and based on past behaviour,
unafraid to employ the violence of direct-action as a means to attaining their goals.
In appearance the Nakai have flesh blue in colouration, with glowing blue eyes, a thin, skeletal figure, an oblong
head, with a pair of catfish-like barbels protruding their cheeks, just underneath their glowing eyes.
It is not known whether this glow is a result of bioluminescence,
or that they simply reflect a large amount of light.
Their language or apparent mode of communication seemingly amounts to a series of clicks and roars and screeches.
Communication via telepathy, however, also remains a possibility.
Based on the layout and prevalence of water noticeably integrated into all of their vessels,
it is likely the Nakai are an amphibious or perhaps even semi-aquatic species.
In physical ability, moreover, the Nakai appear to be somewhat less strong than an average human.
Even in a weakened state, exhausted by the duress of captivity, still Rush overpowered and asphyxiated one,
after the connection between it and Col. Young was severed, with relative ease.
As for technological ability, the Nakai are considerably advanced and possess a number of FTL-capable
starships, each heavily armed and equipped with multiple squadrons of small fighters.
"They're advanced, sure, but not as advanced as the Ancients," as Rush put it.
It is not clear, however, if Rush was referring to the Ancients' level of advancement when they built the Destiny--
or when, for instance, they built the great city of Atlantis.
The Nakai also displayed a surprising degree of understanding with regards to Ancient technology,
namely the Ancient communication stone they confiscated from Rush.
They learned enough about the stone, such that they were able to connect and swap bodies with Lt. James,
in order to sabotage one of Destiny's FTL drives, leaving them exposed to attack,
drifting along in the massive void separating the galaxies.
No doubt are the Nakai clever as they are cunning.
Although Destiny's de facto crew managed to repair the damage caused by the alien saboteur,
still they were followed into the next galaxy.
Those in pursuit were unaware of their exact location in space,
but the perils of this new galaxy forced Chloe to reveal Destiny's position to those Nakai on their trail.
She insisted it was to save everyone's life and the Destiny,
as they were under attack and about to be destroyed the Berzerker drones they had the misfortune of awakening.
The aforementioned perils of this new galaxy.
But her gamble paid off. Three Nakai vessels responded, along with their combined firepower.
The command and control vessel, which coordinates the attacking drones, then took notice
and commanded half the drones to break their focus off Destiny and move to intercept the Nakai vessels,
providing them with just enough time to fire off a salvo from Destiny's main weapon.
The command ship was destroyed, the drones neutralized.
However, two Nakai vessels were destroyed among the fray.
The only two messages ever received from the Nakai were "Surrender" and "No escape."
The messages were not translations either, as Eli remarked. They were sent in English.
Their words are ominous and menacing.
Fundamentally, we know what motivates the Nakai, what motivates them enough to cross whole galaxies,
to endure the destruction of multiple vessels, countless souls lost in the vacuum, without even flinching.
We know they want Destiny. But what we don't know is the prevailing ideology of Nakai civilization.
Based on first impressions, they seem closer to the alien equivalent of space Nazis than they do to us,
to our yearning for peaceful exploration.
One thing is certain, though, the Nakai are a species both inimical and enigmatic.