"Velber" is the name of the predatory Umbral Star, also known as the Harvest Star. Like a comet, it flies on a set orbit through space, passing through the Milky Way galaxy once every 14,000 Earth years.
Its appearance resembles a crying eye.
It destroys all intelligent civilizations in its path, and in doing so, it consumes all digital data within reach.
The last time it passed through Earth's orbit, it annihilated virtually all sentient life on the planet, and plundered 80% of the Moon Cell's data.
It is thought to be a product of the same alien civilization that created the Moon Cell, although its form and purpose are obviously very different.
The true motive of the Umbral Star remains unclear, but during its previous attack on Earth, the Moon Cell did get a chance to analyze its structure.
Within Velber is a central part that could be considered its core, surrounded by layers of armor made of numerous "Arks of the Stars," individual space vessels.
If one considers the main body of Velber to be its central core, the surrounding portions are its self-made invasion weapons. Each layer of armor has its own distinct means of annihilating civilizations.
Velber's form strikes an optimal balance between offense and defense, and it has utilized that balance to wage victorious war against all sentient life in its path for eons.
The Ark of the Stars that carried the "White Titan" Altera to Earth was only one of three Arks that came to Earth in the previous cycle.
The other two, the "Big Brother" and "Little Sister" of Altera, are not mentioned in this game.
Giant Goddess Altera [AntiCell]
An Anticell that fell to the moon, purged from the vanguard of a predatory wandering planet. 14,000 years ago(in the paleolithic era, at the dawning of the second age of the gods) this gigantic white goddess caused great damage to both Earth's civilizations and the Mooncell.
From the wandering planet's perspective, it's just one of several weapons of mass destruction used to prey upon Earth's cultures. As a "Giant Goddess" Anticell, Altera is a type of vanuard that personally absorbs the mana of the civilation she's destroying, enlarging in size without reproducing until she has wiped out the civilization in question, exhausting its mana and effectively self-destructing.
In the Early Dawn Territory/Zone (<Mimei Ryouiki>?) she is 16 meters in size, but that's only because her default height is set to be "10x the size of the people native to that civilization". From this initial condition she can assimilate electrons in order to enlarge in scale.
The avatar she created on Earth, the Giant Goddess Altera, does have its growth capacity limited in relation to the force of the planet's gravity (goddamn Square-Cube Law), but within the Mooncell's cyberspace she can enlarge without limits. That being said, if her volume increases too greatly then her actions become weighted down and slowed, with her nervous transmissions taking far more time to reach her extremities. She therefore keeps it in mind to keep her actions as a Giant Goddess restrained to a somewhat moderate scale.
Magic Energy Absorption [Skill name]
Exclusive skill of Attilaight Cell.
The body of the Titan, composed of spiritron collectors, will unconditionally absorb "magical energy processed into techniques" and covert it into HP and Armor values.
Techniques equate to skills, knowledge, and civilization. To an Anti Cell, there is no better form of nourishment.
Any form of attack (interference) designed by intellect - however undeveloped the theory behind it may be - will only grant more power to Altera.
The large firepower of greater magecraft and strategic weapons of science and technology will fuel the fire further.
On the other hand, while pure magical energy - what can be called life-force itself - will also be mostly absorbed, it can still exert its regular effect.
Facing against an Anti Cell, it comes down to simply "bludgeoning" it.
Although this is a troublesome skill that can absorb even physical attacks boosted with Mana Burst, one thing can deal an effective blow. The energy discharge of the holy sword.
The White Titan that had once appeared upon the surface was repulsed by the holy sword tempered in the inner sea of the Earth.
A mysterious Archer-class Servant who showed up on SE.RA.PH without fanfare.
He is part of Nero's army, but the identity of his summoner remains unknown.
He intends only to support the main character, and has no sense of loyalty to Nero herself. "Well, if that's what I've gotta do, that's what I've gotta do," he thinks. "I suppose I'll fight with her."
He has a similar status to Archimedes, who "transitions to different worlds," a reference to the fact that he came from a divergent history. Although he doesn't truly know who he is. Nameless is highly distrustful of Archimedes. "There's no sense of gravity in that man. You could call it...a lack of survival instinct. He's a man who could basically run away to another world. It's doubtful that he even cares about the future of SE.RA.PH."
Nameless assists the main character to make sure the horrible ending he witnessed never comes to pass, after which he will return to his own timeline. Truthfully, the ending he saw is far, far in the future from the events of this current incident. Even on SE.RA.PH, this Servant is an unfortunate stranger, tossed here from a "wrong future."