Ragnarok

Ragnarok (ラグナロク, Ragunaroku), also known as the Disaster which came from the Sky (空から来た厄災, Sora kara kita yakusai) and by its codename of F.I.N (, Efu Ai Enu; French for "End") or the Fulminating Imperial Naga (フルミナティング・インペリアル・ナーガ, Furuminatingu Inperiaru Nāga), is the name of Black Magister Amadam's magnum opus and the strongest as well as the very first of his Guardian Fiends as summoned through the Tome of Amadam. Ragnarok threatened the safety of the entire world during the and the Great Dark War, both of which were caused by feelings of hatred between the races – because of this, Ragnarok was heralded as an anthropomorphic personification of prejudice, and it exuded foul arcane particles from its body which covered the planet, rendering countless continents to become inhospitable as they were set alight through the demon's pyrokinetic power while twisting any sentient creature it came across into Hellions. After the death of his wife, whom was pregnant with their child, Amadam became obsessed with the idea of bringing them back to life and his sanity slowly eroded – this led him to invent the Black Arts and Living Magic in order to do after his father refused to help him out of a belief that dead people should remain dead to prevent a distortion of the cycle of reincarnation, and from here use the knowledge he'd gained through Devius' study notes he had discovered in order to set up the ritual, slaying untold quantities of humans to gather enough souls to complete the process – however, the ritual was only partially successful, as Aigrette herself without Alexis came back; horrified by this, Aigrette transferred her will into Alexis and absorbed the excess of dark energies in the ritual into herself, giving Alexis life once more, but mutating her into the malicious and deformed otherworldly Ragnarok, an apocalyptic beast with no soul – what emerged was the "body" of the complete thing.

Corroded by Devius' will, Ragnarok is an almighty being whose sole purpose is to end war by attacking countries with its almighty powers to deter future wars, by means similar to "mutually assured destruction", regressing all technology back to the Stone Age, removing any sign of progress in the world so that the laws of the universe can still remain intact; in short, it is the personification of despair and misery, instilling it in the entire world. At the end of the Great Dark War, Ragnarok was slain and its threat was ended by Infinite Light Dragon God Ashur, the Phoenix Knight, Jeanne Sejren as Soul Armour Knight Proto-Gaiki, and Berserk Light Dragon, Indra. After this last battle, Ragnarok was rendered in a helpless state; being reverted to its Tome of Amadam form. Even so, the path the demonic creature carved for itself struck fear into the hearts of all, being one of the most feared beings in history this side of Amadam himself or the Black Dragon, being universally regarded as the strongest of all demonkind. However, the plot of Daybreak S2 revolves around Amadam's attempts to resurrect Ragnarok and retrieve his wife's soul from the beast in order to retry – since Alexis' life is tied to Ragnarok due to her mother's sacrifice, when she comes into contact with the Tome of Amadam after passing the event horizon of despair, the demonic beast's "soul" that's slumbering within her will awaken and merge with the grimoire, finally allowing the complete creature to emerge within the world and cleanse it in the flames of purification. Known as the Ultimate Being (, Arutimitto Bīingu lit. "Ultimate Life Form"), Ragnarok is one of two final bosses of Fairy Tail: Dawn alongside Chakravartin, with Akatsuki dealing with Ragnarok while Tsuruko Sejren fights Chakravartin herself.

Personality and Traits
Not much is shown about Ragnarok in terms of personality – in Daybreak S2, in its first appearance, it is a mindless creature without a consciousness trying to regain its soul, as Aigrette's interference in its creation, while it twisted her body into Ragnarok's, it gave Alexis the beast's soul and allowed her to semi-properly be revived. The only purpose it exists for in this state is wreaking havoc and creating destruction – however, during a flashback to the Great Dark War, in battle, the creature showed a certain amount of focus as it recognized that Soul Armour Knight Phenex was related to its creator and concentrated its attacks on her.

Infernity Curse
Infernity Curse (, Inferuniti Kāsu lit. Refined Hellflames of Nothingness Curse Law; "Infernity" being a portmanteau between "inferno" and "infinity") is a Curse that grants the wielder the ability to manipulate flames which are manganese in texture that can burn anything the user deems to be suitable which can even function when the caster is out of energy, both physical and supernatural – in fact, they perform at their peak when the caster is exhausted from their energies. Known and feared throughout the world as the "Flame of Corruption" (背徳の炎, Haitoku no Honoo), the Infernity Curse is primarily associated with Ragnarok and its many hosts, namely Aigrette Tenjouin and Alexis Tenjouin, with Ragnarok being the harbinger of the apocalypse whom was destined to cleanse the world with its sinister flames, thus allowing the world to begin anew.

Soul of Ragnarok
Soul of Ragnarok (, Sōru ofu Ragunaroku lit. Ruinous Impure Underworld Law of the Universal Destruction Harbinger): Soul of Ragnarok is the name of Ragnarok's personal power as the personification and misery in the universe.

However, even though the Soul of Ragnarok is the source of all of Ragnarok's amazing powers, it also serves as its only weakness – because the complete Ragnarok is a fusion of a mass of demonic energies dwelling within Earth Land's core that were transferred there after the Universal Reboot on Aether and the soul of its host, these two sources have a certain life link. This means that Ragnarok cannot be truly destroyed unless the body and soul are slain simultaneously – this was displayed in both the Great Dark War and in Daybreak S2, where the beast's defeats at the hands of a group of powerful warriors for the former and through Tsuruko's Victorize Kick Version 5 for the latter weren't enough to put it down for good – while Tsuruko's Zero Effect can deal semi-permanent damage to Ragnarok, unless both soul and body are exposed to the power of zero, then it will regenerate some time later. Its destruction was only made possible in Dawn because Vladimir Gideon and Elucifer Mercury went inside Ragnarok to talk Alexis out of her brainwashing while Akatsuki fought Ragnarok itself. Even so, this had to be enabled by the powers of zero and infinity wielded by Tsuruko Sejren and Chakravartin just to give both parties a fighting chance and begin the reversal of the fight – Ragnarok can be likened to a computer following its programming; whereas Tsuruko's Zero Effect induces an effect similar to continuously turning a computer off as it attempts to start up due to Tsuruko's power returning it to zero, and Chakravartin's power forces the computer's programming into an infinite loop with no progress. Both individually and together, the Zero Effect and Infinity Effect can cause Ragnarok to break down for good as it cannot process what's going on – however, for the complete Ragnarok, since the soul makes the creature its own beginning, it can't break down, requiring Vladimir and Elucifer to enter the creature and snap some sense into Alexis for Tsuruko and Chakravartin's power to be put into effect and allow Akatsuki to finally strike Ragnarok down.


 * End of World (, Endo Obu Wārudo lit. World Dissection)

Trivia

 * Ragnarok, similar to Níðhöggr playing the equivalent role to in the Sun Trilogy and Elucifer Mercury being the Sun Trilogy version of, is the Sun Trilogy equivalent to  as both were created by the Black Wizard analogue from the corpse of a loved one in a desperate attempt to revive them, only for something to go horribly wrong. Not only this, both characters played a major antagonistic role in a battle that occurred before the series, and were brought back as an end-game boss later in the actual story – and obviously, both Ragnarok and E.N.D use pyrokinesis-based powers.