Nidhoggr

Níðhöggr (ニーズヘッグ, Nīzuheggu; Malice Striker), also referred to as The Black Dragon (黒龍, Kokuryū) and The Unbreakable Dark ( 示覇王龍(ザ・アンブレイカブル・ダーク), Za Anbureikaburu Dāku lit. Apocalyptic Wicked King Dragon) is the Dragon King (竜王, Ryūō) before Vritra and Indra, before being defeated. He was the original Dragon who wished to dominate humanity, setting the stage for the Human-Dragon War, where he ordered his brethren to slaughter humans until their enemies realized that dragonkind was a "superior race". However, Níðhöggr was soon slain, not by a Dragon, nor by a Dragon Slayer, but rather, by the one known as Elucifer Mercury, allowing Vritra and Indra to take his place as the rulers of dragonkind. From what could be seen, the original Níðhöggr utilized a special type of Dragon Magic referred to as Doom Dragon Magic.

In the Daybreak era, Níðhöggr was cloned by the Magic Council to be used against their enemies from the DNA of the original and brought to life by Arc of Embodiment in a similar manner to Wendy Marvell and Chelia Blendy in the Dawn era; this iteration is known as Níðhöggr Replicant (ニーズヘッグ・レプリカント, Nīzuheggu Repurikanto). Originally, Alexis had expected this supposedly dumb muscle to follow her orders without question, but this Níðhöggr has shown that he is far more than meets the eye. Since revealing his possession of a Dragonar Mode, Níðhöggr Replicant has made it very clear that he is as intelligent as any of the council's forces.

Even after the defeat of his cloned self, the original Níðhöggr returns once more as a cybernetically-enhanced dragon referred to as Níðhöggr SIN (ニーズヘッグ・シン, Nīzuheggu Shin); indeed, one of the Black Dragon's trademark traits is being very defiant and persistent; though he has been defeated multiple times, he always manages to return to attempt to force dragon supremacy, either through his healing abilities or numerous robotic enhancements.

Níðhöggr Replicant can harness the power of Dragonar Mode to become a form known as Abyssal Dragonar Knight ( 天地晦冥の真龍騎化(アビスアル・ドラグナー・ナイト), Abisuaru Doragunā Naito lit. World-Covering Darkness True Dragon Knight Transformation).

Appearance
Before his death at the hands of Elucifer Mercury, Níðhöggr took the form of a rather sleek looking dragon, with a thin body. Níðhöggr's textures were mainly in blacks, purples, and silvers- it possessed noticeable armour of varying colours on its shoulders, legs, and chest. Its wings appeared almost completely mechanical, with purple orbs of darkness closest to its body, and the rest of the wings completely black- split into two on each side. It has three toes and four fingers on each foot and hand, with a long serpentine neck. The Dragon King also possesses three scythe-like appendages curving backwards at the top of its head as well as its mouth, though those point forwards. Its eyes shine emerald.

After being 'revived' by the Magic Council in Daybreak S2 via cloning, Níðhöggr has a much more horrific appearance. With most of its body gone, the former Dragon King has been reduced to a sad shell of its former self. Most of its body is now composed of darkness, with its entire lower body more or less missing. Its arms are connected to its shoulders via this same darkness, with several golden fangs protruding from its still-armoured abdomen. Its eyes shine gold in its degraded head, and eight wings protrude from its back.

At an unspecified time and date, the remains of the original Níðhöggr were properly excavated and the Black Dragon was resurrected, enhanced by countless cybernetics. In this form, Níðhöggr has an almost entirely mechanical body, his cybernetic modules and armour plating are textured in black, his wings resembling their original form- overall, the Dragon King now has a rather skeletal appearance. He has a very durable, Orichalcum-enhanced armour-skin and protective armoured plating. However, the injury that Elucifer used to destroy him- the beam blade of the Magatsuken right through his shoulder- has not yet fully healed, which is his only weak point.

Personality and Traits
Originally, Níðhöggr was a subordinate to the Dragon of Dragons; with dragon-kind in general ruling the lands and going about life however they pleased. However, once they discovered the existences of sentient other races and the Dragon of Dragons advocated for an equal existence between all races, Níðhöggr lost all respect for his leader and backstabbed them, allowing him to take up the mantle of Dragon King. From there on, Níðhöggr pushed his anti-human spiel, fully believing in the superiority of dragons over all others, ranting endlessly to his fellow dragons that they had the right to rule over all and treat others however they wanted to; seeing the "lower races" as something only to exterminate and toy with as much as he pleased.

Níðhöggr, starting the Human-Dragon War, saw it as an opportunity to revel in the bloodshed about to occur. When numerous dragons began to turn against him, he killed any that he could, ignoring the fact that they were of the same race and were once his comrades. There was nothing else he wished more than to reign supreme, as it was quickly made clear as day that Níðhöggr cared for nothing but himself, wishing the world to revolve around him more or less. He desired the chance to fight an opponent strong enough to give him a real challenge- something he soon regretted, as Elucifer Mercury showed him the power of the Soul Armours and annihilated him with ease.

Despite his fearsome and bestial appearance, Níðhöggr is known to be highly intelligent and is shown to even be capable of speaking; though given his dislike of anything that's not a dragon, he rarely, if ever, speaks to others. However, from what is seen when he does, he talks in a rather eloquent manner, often resorting to sesquipedalian loquaciousness; though his quick temper and his arrogant belief that nothing can defeat him often undermines this supposed erudite behaviour, leading to a rather jarring character indeed. Interestingly, many of these traits seem to be embedded on a genetic level, as his clone in S2, who was feral as a result of lacking any civility, generally acted the same as the original Níðhöggr did, albeit with a slurred and constantly shouting speech pattern.

History
Níðhöggr was born at an unknown time and date- however, at some unspecified date; he met up with the rest of his brethren, with all of dragon-kind going about their business however they pleased. However, one day, an Emerald Dragon happened upon several humans. Instead of doing anything about it, surprised, he flew back to the pack, informing the others. What then happened was an intense debate between all of them; the Dragon of Dragons, essentially the Dragon King of the Dragon Kings, was the very first dragon who advocated for an equal existence between all races. Níðhöggr, devastated with his superior's decision, lost all respect for the Dragon of Dragons, resulting in two factions forming between dragonkind, leading to a civil war, where the aspiring Dragon King Níðhöggr, along with his temporary ally Vritra, attacked the Dragon of Dragons when their guard was down and forced their previous leader to utilize Compact Regression to hide their identity moments before the crash into the forest caused by Níðhöggr's Black Megaflare caused them to suffer so much damage that they contracted amnesia.

With that done, Níðhöggr forcibly conscripted the Dragon of Dragons' allies into his anti-human faction, forcing them to serve as soldiers for his conquest of everything that stood before him, which he dubbed the Dragon King Festival (竜王の祭, Ryūō no Matsuri). With his army, he razed numerous cities, at one point single-handedly burning the continent of Bosco to the ground, killing untold amounts of people. Disgusted with his actions, several dragons defected to the side of humanity and began to teach them how to kill their own kind- however, Níðhöggr simply slaughtered anyone that came into conflict with him, even his former comrades. At this point, it became apparent that all he wanted to do was either wipe everything out, or rule no matter the cost. While he heard of the Two Dragon Kings, two Dragon Slayers who had become dragons themselves from murdering every dragon they could, Níðhöggr did not see them as a threat, continuing his conquest.

Near the end of the war, believing that nothing could possibly challenge him, The Unbreakable Dark decided to attempt to travel to other dimensions, hoping to find a satisfying conquest there as he had destroyed ninety percent of Earth Land by that point. However, his evil ambitions were wounded when a mysterious man appeared before him, warning him that if he continued to kill innocents, then the man would crush him like the ant he was. Scoffing at this, Níðhöggr attempted to blast the man with his Black Megaflare...only for it to have no affect- the man, using an odd belt, had transformed into a white and gold winged armoured figure- he had become a Soul Armour Knight. Brutally and efficiently, the man, Elucifer Mercury, followed through on his word, destroying the Dragon King with his Devilize Kick after a swift battle that was solely in Elucifer's favour.

What was left of Níðhöggr's corpse fell into the depths of the ocean, where they would be found several centuries later and a clone, referred to Níðhöggr Replicant, was created to be used as the Magic Council's muscle during the Nega End; this version was destroyed by Tsuruko Sejren as Soul Armour Knight Gaiki using the DB Armament: Dragonic Lance, which was formed from Berserk Light Dragon Indra's spirit. The actual Níðhöggr was "resuscitated" by Devius and had to go through a painful metamorphosis to become the cyborg behemoth known as Níðhöggr SIN some time after the Nega End Crisis. Níðhöggr SIN was finally destroyed for good by the Dragon of Dragons.

Ways of Combat
Master Combatant: Níðhöggr is one the deadliest fighters among dragonkind; due to his dislike of non-dragon forms of combat, he has trained his entire body to serve as a multi-purpose weapon of sorts. Even without his special Dragon Magic, the Dragon King is capable of putting up an extremely tough fight, with his claws, fangs, wings, and tail dominating the opposition with ease. When in battle, Níðhöggr fights in a similar manner to that of a berserker from Norse legends, attacking ferociously and without pause, ignoring minor inconveniences such as injuries in favour of an overwhelming offense that can break down enemy defenses due to the continued assault that the Black Dragon unleashes. When invoking his special Dragon Magic, Doom Dragon Magic, Níðhöggr is capable of utilizing his absolute dominance over the element of darkness to its fullest extent, displaying the tremendous power of his lungs capable of spewing darkness, scales that grant protection against darkness, and razor-sharp nails covered in his element. Indicative of his rampant dislike of anything other than what came from dragons, Níðhöggr's fighting style does not resemble any form of martial arts or anything of the sort in the slightest- it's more somebody swinging their limbs around in any direction with the force of a meteor hoping to hit somebody than somewhat that can be referred to as a "fighting style". In layman's terms, Níðhöggr's fighting style can be described as 'some autismo swinging their arms around in circles while running around like a fuckin spaz'. Because of this "style", The Unbreakable Dark can be considered more a force of nature within the heat of battle than an actual combatant; as silly as it is to imagine in action, the sheer effectiveness of the Dragon King's combat methods cannot be denied.

Physical Prowess
Immense Strength: Given his absolutely immense size, it should come as no surprise that Níðhöggr is as strong as he is big. By making even a single move, the Black Dragon's movements send shockwaves throughout the immediate area, devastating the environment more or less through its presence as Níðhöggr's steps cause enough of a tremor to release small fissures. Indeed, simply by landing, he is capable of reducing a substantially-sized area to rubble. In addition, during the Human-Dragon War, Níðhöggr was shown to be capable of effortlessly destroying any and all dragons who attempted to oppose him, tearing their bodies apart with its vicious implements. Numerous Dragon Slayers couldn't seem to scratch the Dragon King, even the Darkness-aligned ones; even without the assistance of his element, Níðhöggr is capable of splitting the hydrogen in the air just by swinging his claws downwards, enabling the Black Dragon to unleash a small explosion that can blow his opposition away. Smashing through all sorts of metals simply by running into them at full-speed, shattering their very foundations, it is shown that Níðhöggr never held back in the heat of battle, constantly displaying his fearsome power for all to see; it is stated that if Elucifer did not stop him, the Black Dragon could have actually achieved his desire to conquer the world.

Immense Speed: Despite his large size, the Dragon King is also deceptively swift; he can move great distances in an instant as if to displace himself, moving so fast that his enemies are unable to register his movements. He seems to flicker from place to place using a flash of darkness when engaging in acts of speed; capable of dematerializing himself from one place and re-materializing himself at a distance by literally breaking down into darkness and reassembles himself, making a strange phaser-like sound when in motion; he is capable of completely evading an attack from Jeanne Sejren in her Corpse Shell form; additionally, he has shown to move fast enough to sucker-punch another dragon in the span of a second, moving from ten kilometers away to strike the dragon directly. Even if someone could detect his trajectory, generally, it is near impossible to catch him.
 * Flight: Níðhöggr is capable of using its wings to fly. Such wings are reminiscent of a robot's, and come with small spike-like protrusions on their upper edges. The wings allow Níðhöggr to travel across rough terrain, moving through areas where flying is the only method of passing through, or even just getting to higher places. When in flight, Níðhöggr can move at incredible speeds, reaching that of 768 Mph. When not using its wings to move through the air, Níðhöggr can also use its wings to give itself a speed boost when moving along the ground, by using them to propel itself forward at breakneck speeds. When using its wings to travel this way, Níðhöggr stands on its tip-toes and beats its wings to propel itself forward at high speeds. When facing enemies in combat, Níðhöggr can also use its wings for defensive and offensive purposes, by using them to attack its foes by twirling around or swinging them like a whip.

Immense Durability: Befitting its status, Níðhöggr is capable of shrugging off attacks from very powerful magicians, even downright ignoring the effects of several high-powered spells such as Abyss Break and even a blast from an ancient version of Etherion, which had enough power to destroy two adjacent cities. Generally, the body of the Black Dragon is highly resistant to physical injury, capable of withstanding assault from numerous weapons as well as attacks from super powered individuals; the scales of the dragon absorb any and all sources of darkness in order to reduce damage and knockback even further. Against a non-Soul Armour-equipped opponent, Níðhöggr can withstand impacts, such as falling from several stories, being repeatedly struck with superhuman force or by several powerful energy blasts, that would severely injure or kill a normal dragon with little to no injury himself. Even repeated assaults launched by numerous Dragon Slayers; who, as everyone and their mother knows, can supposedly slay dragonkind, have absolutely no effect on the Black Dragon. Going one step further, very few dragons can properly harm Níðhöggr- as only Rosa's Stardust Indra Promotion and the Dragon of Dragons have shown to be capable of inflicting any lasting damage upon the Dragon King among their own kind, even taking the Fire Dragon's Roar of the Fire Dragon King, Bahamut, and emerging unscathed as if nothing happened.
 * Dragonskin ( 竜血本弁</rb>(</rp>ドラゴンスキン</rt>)</rp>, Doragonsukin lit. Dragon-Blooded Innate Defense): Dragonskin is a natural power that all Dragons possess. It is touted as a "supreme defense", however, it is born from the effects of their scales when charged with magical power. It is activated by the dragon projecting the pressure of their innate magical power outwards, applying a thin layer of pressure onto their scales, the power of their magic is expelled through the thin layer, generating a personal force field around their bodies, extending to about one foot in diameter from their body- this ability is near constantly active. A dragon can use their scales for many purposes, such as preventing physical contact, keeping debris and unwanted materials off of their body, erecting their force field to escape piles of debris easier, and a few other purposes as well. The scales are also particularly resistant to foreign materials in the first place, as they would slide off much faster and more smoothly then it would from the dragon's body alone, due to the fact that they are dragon scales charged with magical power- this allows the dragon to resist magical attacks better than other races due to their natural toughness.

Magical Abilities
Immense Magical Power: As a dragon, Níðhöggr is in possession of a truly staggering amount of magical power. Magic originates from a Magic Origin (魔原, Magen), which is exactly what the wording indicates—it is a special organ that is located within the body of a magician, that absorbs eternano and bunches it up into clusters, which is processed into magical power. Every Mage has a container inside their body that determines the limits of their Magic Power; this is precisely what a Magic Origin is. If the case becomes empty, eternano will come from the atmosphere and enters the magician's body and after a while, their Magic Power is restored. A Dragon's Magic Origin is drastically different than any other race's; it is referred to as the Factor of the Dragon (竜の因子, Ryū no Inshi); the dragon's origin produces a unique magical power that transcends what could be achieved by normal humans. Normally, a magician's body could be considered a machine which created magical energy, a Dragon's magic origin acts as a factory which created magical energy. It functions as an enormous magic core with tremendous capacity that generates energy independent from their body simply through breathing. To this extent, when flared up to its greatest extent, the magical aura of the Black Dragon is capable of disrupting all forms of defensive-based magic. As a byproduct of his immense power, Níðhöggr is immune to the effects of manipulation-based magics, including the non-existent Dragon Supremacy Magic.

Dragon Magic
Dragon Magic (竜魔法, Ryū Mahō): A special type of magic, genetically obtained, due to Níðhöggr being the Black Dragon. Dragon Magic is vastly different than the regular Dragon Slayer Magic, due to the latter magic being an offshoot of the former. In fact, some could call Dragon Slayer Magic inferior to the genuine article. While Dragon Slayer Magic focuses on the caster using the magic to take upon the traits of their elemental dragon, Dragon Magic, due to being the inherent magic of the dragon race, grants the caster the power of their element as usual, but additionally focuses on the other aspects of the element, as well as the secondary skills of the dragon. However, Dragon Magic is the only Lost Magic to be considered truly 'lost', as only dragon-human hybrids are able to utilize it—and since few dragons utilize Compact Regression to settle down with humans there are very few practitioners.

Unlike many of the combatants in the Human-Dragon War, Níðhöggr's Dragon Magic was a never Dragon Slayer Magic known as Darkness Dragon Slayer Magic (闇の滅竜魔法, An no Metsuryū Mahō)- The Unbreakable Dark was one of the few dragons who fought with all of his strength from the beginning, refusing to even give humans the time of day and teach them his powers. As a result, Níðhöggr's Dragon Magic is unique to him and him alone; not even cloning could allow anyone to pry this amazing power from the Dragon King's hands, er, claws. Dragon Magic is not a learnt magic, as it is imbued within the user's soul, and it will show itself in an unfortunate scenario. After which, the user has permanent access to the magic.

Doom Dragon Magic
Doom Dragon Magic ( 常闇龍の黒魔法</rb>(</rp>ドゥーム・ドラゴン・マジック</rt>)</rp>, Dūmu Doragon Majikku lit. Black Magic of the Everlasting Darkness Dragon) is a Caster Magic, Lost Magic, and lastly, as well as most obviously, a Dragon Magic that is exclusive to Níðhöggr. Essentially, Doom Dragon Magic enables the Dragon King to manipulate, generate, absorb, and generally have absolute dominance over the element of darkness and anything related to it, such as the night skies and shadows, allowing him to produce darkness from any part of his body, including his lungs, giving him the ability to, in essence, breathe darkness. With Doom Dragon Magic, Níðhöggr can draw power from the negative energy in the world and the night itself, allowing his power to grow stronger. The shadows produced by Doom Dragon Magic can take on a variety of functions, such as offensives, supplements, and altering of elements, allowing the Black Dragon a great deal of flexibility.

Like other elemental Magic, this Magic includes body transformation, controlling the darkness and shadows in the area to engulf the Dragon King's entire vicinity into pitch-black darkness, including himself. Níðhöggr is also able to fade himself into shadows to move swiftly, dodging efficiently and making surprise attacks. It allows him to bend his own shadow for various purposes, and he can merge with his shadow and the shadows of others, granting the Dragon King the element of surprise. The darkness produced by Doom Dragon Magic is able to be utilized in several different ways, allowing for a high level of adaptability; the darkness is able to be released in freeform, as condensed, or even molded into the shape of a weapon, taking on the properties of said chosen shape. Níðhöggr is able take out multiple opponents with just one attack and capture people, sinking them into the depths of his shadow. The darkness and shadows generated by this magic cannot be penetrated by light and sometimes not other energies either.

The darkness that the Black Dragon manipulates is incredibly deadly; it is somewhat acidic in properties, and can melt most substances frighteningly quickly; the Dragon King can somehow grant his shadows material consistency, causing hitting damage alongside devouring. The sub-ability of Doom Dragon Magic is known as Soul Reaper ( 魂窃闇</rb>(</rp>ソウル・リーパー</rt>)</rp>, Sōru Rīpā lit. Soul-Stealing Darkness), which drains the life out of everything that Níðhöggr's darkness comes into contact with, turning living organisms into dried husks of their former selves and devastating the environment. Soul Reaper, as its name indicates, can absorb the life of living beings and even Níðhöggr's fellow dragons, absorbing their power for the Dragon King's own use. Because of this devious power, with the exception of the Dragon of Dragons, Níðhöggr is regarded as the strongest of the anti-human faction, if not dragonkind in general.
 * Black Megaflare ( 黒龍王の咆吼</rb>(</rp>ブラック・メガフレア</rt>)</rp>, Burakku Megafurea lit. Black Dragon King's Roar): Black Megaflare is the name of Níðhöggr's Dragon's Roar. When performing the Black Megaflare, Níðhöggr transforms his lungs into a miniaturized Magic Origin, attaining tremendous lung capacity before he gathers and condense stray eternano from the atmosphere into his mouth, attuning it to his natural element of darkness. The form that Black Megaflare takes is one of a powerful chain reaction akin to nuclear fission; as the magical energies in the Black Dragon's mouth will rumble violently as they quickly spiral outwards before manifesting as upon release, the magical energy collapses in on itself then expands outwards rapidly towards the enemy; a flare is a contained release of energy, which fully exposes the enemy to the source rather than blow them away from it after a while. When charging the Black Megaflare, Níðhöggr's mouth begins to glow red as his veins light up, unleashing this energy in the form of an enormous black laser beam, at least three kilometers in width, that has a red outline. The trajectory of the laser can be altered, allowing the Black Dragon to strike more than one opponent. The whiplash of the attack can be quite huge, usually blowing apart anything behind the Dragon King at the time of attack. Along with its astounding destructive power, the attack has a delayed effect if the initial blast should fail, wherein the target will be blasted by residual effects left over by the beam; which manifests in the form of orbs of darkness, which lock-on to Níðhöggr's opponents no matter their position, chasing after them. They can dodge obstacles in their way, unless it is not physically possible, never ceasing their hunt until they catch their prey. While not as overwhelming as the initial blast, the after-effect can catch foes off guard; especially because Black Megaflare ends in a large explosion at the moment of impact. It goes without saying that the Dragon's Roar of Níðhöggr can deal a great amount of damage to any opponent with an enormous explosion upon contact, leaving huge mushroom cloud; similar a nuclear bomb; this effect spreads out to a fan-shaped area, and is easily capable of destroying several buildings in a single strike; reducing an entire desert to naught but a long-spanning sheet of molten glass; at full power, Black Megaflare can completely eradicate an island, imprinting a giant crater into the ocean.
 * Hades Charge ( <rb>常闇上</rb><rp>(</rp><rt>ハデス・チャージ</rt><rp>)</rp>, Hadesu Chāji lit. Everlasting Darkness Escalation): Hades Charge is an optional ability of Black Megaflare; when initiating the mechanics of his Dragon's Roar, Níðhöggr is capable of adding more power when he is initiating the attack to achieve a higher level of power; this process, while it does result in the spell being launched at an ever-so-slightly later date, it can drastically enhances the power, width, and size of Black Megaflare spell, and as such, the option of charging can mean the difference between victory and defeat in the heat of battle. Generally, the charging speed of the Black Megaflare spell takes about two seconds down to the letter, and if the Black Megaflare spell is charged, it travels in a straight line, but when fired without charging, it flies in an up-and-down wave motion. When increasing the power of his Dragon's Roar, the Dragon King adds more and more of his darkness into the spell, drawing it from outside sources such as the negativity in the atmosphere, the night sky, or the ambient eternano in the immediate vicinity. Níðhöggr is also capable of continuing to hold the spell in its magical energy compressed form and move around as normal; this can serve as a way to take advantage of extra power while taking evasive action. Depending on the amount of time spent charging, Black Megaflare has Jet-Black Gigaflare ( <rb>黒龍王の咆吼・二段</rb><rp>(</rp><rt>ジェット・ブラック・ギガフレア</rt><rp>)</rp> , Jetto Burakku Gigafurea lit. Black Dragon King's Roar: Second Level), Tyrant Teraflare ( <rb>黒龍王の咆吼・三段</rb><rp>(</rp><rt>タイラント・テラフレア</rt><rp>)</rp> , Tairanto Terafurea lit. Black Dragon King's Roar: Third Level), and finally, Absolute Darkness Exaflare ( <rb>黒龍王の邪炎殺闇波</rb><rp>(</rp><rt>アブソリュート・ダークネス・エクサフレア</rt><rp>)</rp> , Abusoryūto Dākunesu Ekusafurea lit. Black Dragon King's Wicked Dark Immolation Wave), as upgrades, with each level successively stronger than the last.

Dragonar Mode
Dragonar Mode ( <rb>龍騎化</rb><rp>(</rp><rt>ドラグナー・モード</rt><rp>)</rp>, Doragunā Mōdo lit. Dragon Knight Transformation) is an Ancient Spell exclusive to Dragons and those with dragon-blood. It enables the user to take upon an armoured form. Dragonar Mode is one of the very few powers related to Dragons that was developed after the Human-Dragon War; more specifically, as most Dragons had utilized Compact Regression to hide themselves amongst mankind, Dragonar Mode was developed in order to compensate for the drastic reduction of power while making sure that onlookers would not find out their origins as a dragon. It was hinted that Dragonar Mode was specifically developed in an attempt to mimic the overwhelming power of the Soul Armours, though Soul Armour Knights aside from the Phoenix Knight were a rare sight during those days. Even in an age without dragons due to all of them being slaughtered by the world famous unicyclist known as "Badass McPowerfist", Dragonar Mode is still around, albeit technically "lost"; as almost no Dragons are shown to activate its power in the current time, being known as a "mere myth". Dragonar Mode is also referred to as the "Strongest Dragon Transformation" (最強の龍変身, Saikyō no Ryū Henshin) though this cannot be backed up as a Dragonar Mode user has never properly fought a dragon or Dragon Slayer in any other form.

Essentially, Dragonar Mode is available to a Dragon who used Compact Regression and with the help of an outside source of power; it drags out their true form and compresses it into an armour to enable them to use their full power without transforming into an unwieldy full-body dragon form. However, it requires truly staggering amounts of energy gain, whether magical or metaphysical in nature, taking a small portion of the user's life force with every utilization of the Ancient Spell. Normal dragons are capable of activating Dragonar Mode by will, as long as they allow the form to consume a small portion of their life. However, in rare cases, it is available to a being with the blood of dragons—by raising their "fighting spirit" to its utmost limit (or something like that; the process is ill-defined), a half-dragon is capable of assuming a humanoid dragon form that bears a striking likeness to their dragon parent. However, this form is considered to be "flawed" and is only half as strong as a Dragonar Mode induced by a full-blooded dragon. However, this form is extremely taxing to the point that it can only last five minutes initially even with support, but with proper training, it can be maintained for longer periods of time. The original Níðhöggr never had access to Dragonar Mode, due to his distaste of anything that could link humans and dragons together- however, his clone, Níðhöggr Replicant, had the ability forcibly installed within his soul.

Abyssal Dragonar Knight
Abyssal Dragonar Knight = Abyssal Dragonar Knight ( <rb>天地晦冥の真龍騎化</rb><rp>(</rp><rt>アビスアル・ドラグナー・ナイト</rt><rp>)</rp>, Abisuaru Doragunā Naito lit. World-Covering Darkness True Dragon Knight Transformation): The Abyssal Dragonar Knight form is an evolution of Níðhöggr, which is achieved when harnessing the power of Dragonar Mode. The ability to access the all-powerful Dragonar Mode was installed within the soul of Níðhöggr's clone by the Magic Council's R&D department, and Alexis Tenjouin can invoke it at any time, even against his will. When transformed into Abyssal Dragonar Knight, Níðhöggr takes upon a humanoid appearance, donning black draconic armour with gold trim and numerous red orbs transfixed upon the armour. A tattered blue cape drapes down from the back. Níðhöggr Replicant, when activating Abyssal Dragonar Knight, regenerates the lower half of his body, though it immediately vanishes upon deactivation.

In this form, Níðhöggr Replicant's parameters have been drastically enhanced all across the board, just like all other Dragonar Mode forms. Unlike the original Níðhöggr, whom focused solely on offensive measures and just relied on his natural toughness and dragon powers to get the job done (and effectively at that), Níðhöggr Replicant in his Abyssal Dragonar Knight form automatically gains a large amount of finesse in his movements and fighting style, going from an untrained brute to a black knight who can fight like a master swordsman as the form's appearance would indicate. As Abyssal Dragonar Knight, Níðhöggr Replicant is a fast-moving mass of destruction towards his enemies, flying at mach ten and jumping as high as the skies, all while hitting even harder than what a Crash user with super strength can muster in terms of power. There are many parts of this form's strength which are unmeasured, but it has been confirmed that Níðhöggr Replicant possesses an unbelievable combat record from his countless battles in his past life.


 * AbyssalDragonarKnightWeapon.jpgArondight ( <rb>覇王両断剣</rb><rp>(</rp><rt>アロンダイト</rt><rp>)</rp>, Arondaito lit. Tyrant Bisection Sword): When Níðhöggr Replicant activates Dragonar Mode and becomes the Abyssal Dragonar Knight, he can summon an extravagant-looking sword that resembles a battleaxe more than a proper blade. The Arondight is double-edged, with each proper blade having a golden trim on the outer part and black textures on the inner parts, which are connected to two more blades that are also connected to the long staff that could be considered a "hilt" of sorts- the hilt is adorned with a stylized dagger. In any case, the Arondight is a sword that is considered limitless; capable of receiving any attack without taking damage. It is normally clad in darkness to hide its identity and increase its destructive power. The blade itself can endure even the strongest of attacks, making it quite effective in blocking and deflecting incoming attacks; and it can withstand getting crushed by force. The blade is strong and sharp enough to cut clean through the scales of other dragons as well. Interestingly, the Arondight is capable of cutting straight through Orichalcum; being touted as "being so sharp you could cut yourself just by looking at it"; but on a serious note, the Arondight was able to cleave through diamond and even magic blasts effortlessly; and on one occasion, Níðhöggr Replicant was capable of using the cold steel of the sword to absorb an energy blast before returning it to sender via another swing of the blade. Lastly, Níðhöggr Replicant is capable of channeling his Doom Dragon Magic into the Arondight, endowing it with a burning red and black aura and causing runic symbols to appear along its length. The Arondight can launch Black Megaflare and its upgraded versions when Níðhöggr Replicant channels his magic into it; the normal Dragon's Roar takes the form of a crescent of darkness when unleashed through the blade.
 * Drago Aura ( <rb>龍幻顕現</rb><rp>(</rp><rt>ドラゴ・オーラ</rt><rp>)</rp>, Dorago Ōra lit. Dragon Phantasm Manifestation): A special ability of Dragonar Mode is that the user is capable of manifesting parts of their old full-body dragon form upon chosen parts of their body at will, simply by mental command. This allows the user to harness a portion of their old body's power for a single attack. While the forms of the attachments vary, the Drago Skull (ドラゴ・スカル, Dorago Sukaru) summons the dragon's head for a beam attack or a vicious bite, the Drago Tail (ドラゴ・テイル, Dorago Teiru) manifests the dragon's tail to grab an opponent or to smash them, the Drago Wings (ドラゴ・ウィング, Dorago Uingu) enables flight, and the Drago Claws (ドラゴ・クロー, Dorago Kurō) drastically enhance the user's power in close combat. Not only do these attachments boost the user's offensive power, they project an aura of the user's original dragon form outwards to attack one more time- while not as powerful as the initial strike, it can catch foes offguard. The aura of their dragon form can come alive and bite down on anything when the user wills it to, and it can extend itself for a few feet to chomp on a hapless and most likely taken-back foe.
 * Dragoon Streiser (ドラグーン・ストライザー, Doragūn Sutoraizā): The most powerful attack of Dragonar Mode. When performing Dragoon Streiser, Níðhöggr Replicant gathers and condenses darkness into his leg; applying the high-speed movements granted by transforming his body into darkness in order to accelerate his movements to tremendous speeds—so fast that the opponent cannot see where he is moving—then, by jumping forward, he unleashes a powerful flying side kick that attacks the opponent head-on; once in the air, a projection of his original dragon form snakes around him as Níðhöggr Replicant corkscrews into a kicking position, then as he reaches the peak of his jump, the dragon projection sends him flying forward with a Dragon's Roar; causing him to slam down upon the opponent with his foot with a strike that equals over three hundred tons in weight, more than enough to completely shatter the opponent into innumerable fragments. The only major weakness of this technique is that Níðhöggr Replicant has to focus all his power into his legs, forcing him to lower his arms and enter a guard-less stance; which can allow the opponent to strike; as he focuses all of his power while maintaining his center of balance and delivers a kick at the opponent's weak spot; shattering any defenses and severely winding them.

Trivia

 * When designing the Black Dragon, the author took advantage of the fact that there was no proper Acnologia equivalent within the Sun Trilogy, Níðhöggr was created with that in mind; an extremely powerful, black-textured dragon whose Dragon-related Magic allows it to drain life to an extent, referred to as the Dragon King and went on a rampage during the Human-Dragon War, having a major role in something referred to as a "Dragon King Festival". However, since the whole "Dragon Slayers killed dragons and transformed into them" thing went to Rosa and E, Níðhöggr is different in that he is a full-blooded dragon and was the one who started the Human-Dragon War in the first place. Níðhöggr's title, The Unbreakable Dark, references this in its kanji; Apocalyptic Wicked King Dragon; as opposed to "The Black Dragon in the Book of Apocalypse".
 * Níðhöggr, in his final dragon form, is the single largest being seen in the Sun Trilogy (with the exception of Signa), even dwarfing Vritra in its dragon form, and the Magitek Mecha "Rayburn".