Achlys

"Wallowing in self-pity won't help you; after all, if you earn the pity of the being who personifies misery and sadness, you truly must be pathetic, no?"

- Achlys

Achlys is the Primordial Goddess of the "Clouding of Eyes after Death", the "Eternal Night", and "Poison", and is also listed as one of the various deities of the night in Greek Mythology, and is one of the creations of Nyx, the Primordial Goddess of the Night, though it appears that she is not related to Erebus, the Primordial God of Darkness. She is also connected to the Keres who are "death-spirits" and who is also known as the "Tenebrae" or "Darknesses" and the Moirai, who is known as the "Fates".

She is the creator of the "Defiling Gear", also known as the "Unhallowed Artifact of Chaos", which is based on the "Sacred Gear", which utilizes the power of death-spirits to fuel their power. It is considered an "Artificial Sacred Gear" due to there only being a single copy of it, which Achlys uses herself, though she vehemently denies this while Azazel simply laughs at her attempts - though he never supports the idea that it is an Artificial Sacred Gear, as he refers to it as "Natural Artificialisation", something that was artificially created from something natural.

Appearance
"I am just as beautiful as my creator, Nyx, intended. Some might call me ugly, but I won't cry, okay? I won't!"

- Achlys Achlys is a pale-skinned, youngish looking girl, with jet-black hair which falls down to her chest, which is worn in twintails, held together by light blue and black ribbons. Her bangs fall down to her eyes, with the sides falling down to her chest. She also has dark red eyes that burn burgundy. She stands at about four feet and eleven inches, or about one-hundred forty-nine centimeters tall.

She wears a short black dress with milky blue lining, and a belt-like accessory connecting into a bow behind her back. There is also a large circle piece with white details connecting the collar and the dress together, and she has on long, fingerless black globes with milky blue details and similarly detailed boots.

Personality
"Suffer, and suffer some more. Your pain brings me joy, but my pain should bring nothing but sorrow to you. It's an equivalent exchange, right?"

- Achlys Much like Nyx, her creator, Achlys is a rather cheerful and sadistic person who enjoys seeing others suffer and in pain, however, she is also known to take things too far due to wishing to see the sight of "someone dying", and as such, she yearns for death - even for herself. Though Achlys is rather serious with her work, she is often known to become pragmatic when a certain video game series gets a new release - that being "Dragon Quest", and as a long-time fan of the series, her room is decorated in Dragon Quest merchandise, such as several slime plushies.

Unlike Hades, the God of the Realm of the Deah, Achlys doesn't despise being of other mythologies, and much like her own creator, she throws praise to those who stand out, such as Ajuka Beelzebub, Azazel, and even to certain humans who catch her eye. As such, she has built up connections among many beings of Supernatural origin and she has also assisted Azazel and Ajuka in their own research from time to time.

Because of her connection to death, she is rather sensitive to negative emotions, and as such, it is incredibly easy to make her depressed. However, she has attempted to curb this habit of hers, as she is often made fun of because of it - which merely results in her locking herself in her room and crying.

History
"Nyx created me, long, long ago. I am truly thankful for her. She is like my mother, and I love that about her."

- Achlys She was created by Nyx, the Primordial Goddess of the Night, in a personal project of hers without the help of Erebus, the Primordial God of Darkness and her older brother. Because of this, she is often seen as being one of the Keres, which would make her a sister of the Moirai. She was also known as the "Eternal Night" before Chaos was, making her "older" than it, which would be confusing, as Nyx is its daughter, and as such, it is simply ignored. Achlys believes than it simply took her title for itself because "it sounded cool" which supports the belief that she was born after Chaos, which lessons the already big headache in dealing with the Goddess.

During the Great War between the Three Factions, Achlys did not take a side but instead watched and cheered on the fighters, even when the battle was taking place around her. However, she had taken part in the battle against Ddraig, the Red Dragon of Domination, and Albion, the White Dragon of Supremacy, and had helped seal them within Sacred Gears. This encounter caused her to become interested in what was known as a "Sacred Gear", a creation of God of the Bible for humans, and had planned on asking Him about his research into it when he wasn't busy (you know, with fighting a war and all), however, due to His death, she had instead captured several Sacred Gear possessors to experiment on them.

When she met Azazel, who had just started to research God's Artifacts, Achlys became his trusty second-in-command of research and had joined the Grigori, gaining the position of "Researcher of God's Artifacts". Due to her work, Azazel began to experiment in creating his own Sacred Gears, which eventually birthed the "Artificial Sacred Gear Creation Project", or the ASGCP for short. Thanks to the hard work of Azazel, Achlys, and many other researchers into the subject of Sacred Gears, Azazel was able to create the first prototype of the Artificial Sacred Gear.

Years later, Achlys would utilize the data created from this project and use it to create something for herself - which became known as the "Defiling Gear" something that was created based on Sacred Gears but wasn't wholly an Artificial Sacred Gear, though people still call it as such. Azazel refers to it as "Natural Artificialisation", or artificially created from something that occurs naturally. In this case, Achlys took the essence of the Keres and used them to fuel her own creation, binding their souls to a scythe she created after researching the scythes of Grim Reapers. After several experimentations, she added part of Chaos itself and Nyx's blood to help tether it together and created what she refers to as the "Unhallowed Artifact of Chaos".

Powers and Abilities
Immense Physicality Immense Intellect Darkness Embodiment Night Empowerment Master Magician Stealth Expert
 * Immense Strength
 * Immense Speed
 * Immense Durability
 * Master Scythe Wielder
 * Master Hand-to-Hand Combatant
 * Master Inventor
 * Expert Tactician
 * Exceptional Advisor
 * Inherit-Omnimalevolence
 * Evil Awareness
 * Darkness Manipulation
 * Mist Manipulation
 * Deadly Poison Manipulation
 * Curse Manipulation
 * Night Vision
 * Nightmare Manipulation
 * Olympus Magic
 * Fallen Angel Magic
 * Black Magic
 * Sealing Magic
 * Telepathy
 * Hypnotism
 * Memory Alteration

Flight

Defiling Gear
Also known as the "Unhallowed Artifact of Chaos", is the personal invention of Achlys, something that was based on Sacred Gears, utilizing research data developed by Azazel, other researchers, and herself. Though it is something that could be described as an Artificial Sacred Gear, there are some differences, one of which, is that it lacks a "Balance Breaker" form, that other Sacred Gears possess. Another difference is that it was something natural but had been artificially changed to create it. As Azazel likes to put it, it is a "natural artificialisation". By doing various experimentations on Keres, Achlys eventually settled on using a small amount of power taken from Chaos and the blood of Nyx to help tether the power of the "death-spirits" to a scythe Achlys developed based off of the scythes that Grim Reapers possess, which in turn, created this weapon, which could theoretically naturally form within the environment. As it was created based on several points of data, it shares similarities with several different weapons. The first is the scythes utilized by Grim Reapers. Because of their uniqueness, these scythes do not leave physical wounds, but spiritual wounds, injuries which are inflicted to the soul of the victim, which lowers their life expectancy. Because of this, regular defense and armor will not work. Achlys' version, however, is slightly different. It can leave physical wounds, but at a reduced cost to spiritual damage, which she is fine with. The second is the data compiled by Azazel and his team of researchers as well as original Sacred Gears created by God of the Bible. Because it was created utilizing this research, it can be detected by devices created to detect Sacred Gears and much like Artificial Sacred Gears, it can be given to someone else and taken away freely, unlike regular Sacred Gears which are tethered to the soul itself. The third is from Nyx's blood, Chaos' power, and the Keres. Because of these elements which went into producing this "natural" weapon, the Defiling Gear possesses a great deal of control over darkness, shadows, and negativity. It is capable of cutting through to different planes of existence, such as the Dimensional Gap, or into sealed realms belonging to other Pantheons, as well as manipulating shadows to twist and bend around the wielder, to defend or to attack. It can also create curses around the scythe which are inflicted upon whoever is damaged by the blade, leaving them in terrible state afterward, even if it was only through the smallest of cuts.

Trivia

 * Her physical appearance is based on "Uni" from "Neptunia".
 * The Defiling Gear's appearance comes from "Owari no Seraph" from the "Cursed Gear" of "Shinoa Hīragi".