Nidhogg

The Black Dragon (黒い龍) who goes by the name "Nidhogg Dragon" was a ruler hailing from the 12th Realm who was sealed in one of the old abandoned bases of the Cult of Diablos near the academy town of Laugus until it was awakened by Eta by mistake, whereupon this Dragon was slain by Shadow.

Appearance
The Black Dragon, known by the christened name of "Nidhogg Dragon", has an appearance, similar to the dragons of the world where Cid Kagenō lives, before magic came to him, but with a more demonic appearance than normal, His size is double, or more, than that of the Mist Dragon. Both his skin and his scales that cover his entire body are harder even than Mithril itself, making him impossible to hurt, even with the artifacts that are part of the heroines. He is a quadruped being, with a huge tail, the end of which is in the shape of a huge semi-drident with 2 very hard points. Like all Dragons, it carries with it 2 huge wings, black and red in color, (where one of these, its left wing, is damaged by the wounds it suffered when it became a prey to the Cult of Diablos), the edges Said wings are semi-pointed and have a pair of very large chusos, in the upper unions of their wings, which is why it usually resembles something evil and can use said large chusos, either to fight while flying or when it is in flight. land.

It has a very long neck, where there is a row of eyes, going down its entire neck, and a few more of these eyes are found on its two frontal blades, one on each side, it has a huge semi-triangular head with two pairs of huge red horns, which measure almost the same as its mouth, which are bent forward, and it has 3 pairs of eyes that range from red to yellow, and its mouth is covered with very sharp fangs that never deteriorate, being able to swallow and eat anything. several people in one bite.

His entire body in general is mostly black, while some parts of it, such as the horns on his head, and his dragon wings among other things, are red. He has very strong and sharp claws, capable of tearing apart and cutting everything that comes their way, from a strong knight in armor, to huge buildings, without any problem. Due to its demonic features, it is considered that the Black Dragon may have part of the blood of demons throughout its body, which would explain its demonic features.

Personality
Unlike the other Dragons, from the other world, which resemble the Black Dragon, this one, for its part, is wild, it is not intelligent, and it is carried away by its instincts like any animal or wild creature.

Powers & Abilities
The Black Dragon was a magical being of great power, which was said to be able to sweep an entire country, in less than a day. Said Dragon was so powerful that not even 2 of the 7 Shadows of Shadow Garden, Zeta and Eta, in full capacity and growth, both in magical power, and in the rest, could defeat it. It was not until Shadow happened to pass by there, when feel the awakened magical power of the Black Dragon, and at the end, Shadow killed him with a "I Am Atomic".

Breath Magic of Black Dragon
The black Dragon can, like all dragons, channel a powerful burst of magical Dragon breath, many more powerful and faster, than that of the magical dragons, of the world of Cid Kagenō, for the most part, capable of extending to the horizon, generating with it, a huge explosion, being capable of destroying if it wants to, from a big city, to huge islands, and even an entire country, in less than a few hours, before the end of the day, reducing all forms of life and matter, to dust or leaving practically no trace of it.

During his newly awakened against Zeta and Eta, while the Dragon healed his old wounds, which he had, mainly on one of his wings, he tried to unleash his powerful Dragonic breath, to kill Zeta and Eta, who were, in one attack, 2 of the 7 shadows of Shadow Garden, but was interrupted and hurt by Shadow, preventing the dragon from finishing charging its attack.

Trivia

 * Being ancestral and very old, its exact real age as such, of the Black Dragon, is unknown, but according to the studies and analysis of Lord Laugus, like the other rulers of the parallel kingdoms, he affirms that this ruler has existed for thousands of miles, or perhaps eons.
 * Said Dragon was so powerful, that in terms of destructive power, and durability to physical attacks, it surpassed even Elizabeth in her Berseker state, and the Dragon of the Mist, because the Black Dragon was the strongest ruler of his kingdom. but the Black Dragon was still inferior, to the Demon King Ragnarok, and the Demon King Diabolos.
 * The Black Dragon is so far, one of the few antagonistic characters, who only appears and is mentioned, in the game, of the Eminence of Shadows: Master of Garden, since said Dragon does not appear or is made any mention, in the Light Novel, in the Web Novel, in the manga, nor in the anime.
 * Both the story and the encounter and release of the Black Dragon, which appears only in the game, are found between episodes 14 and 15 of the anime (that is, in volume 2 of the Light Novel), being a part where there is time. to give more details of the set. the characters of Zeta and Eta, without deviating or altering the main story.
 * Until the current Date, it is unknown if the Cult of Diabolos is still aware of what happened to the Black Dragon, but according to the records and diaries of Lord Laugus, apparently, the cult itself completely discarded or forgotten, the past investigations and experiments, which they had with the Black Dragon, by focusing mainly on perfecting the Pearls of Diablos.
 * Up to the present date, the Black Dragon is the only one of its kind, which does not belong to the world, but belongs to the doseabo discovered by the Cult of Devils, although said dragon partially shares the characteristic features of the ancient Dragons and some magical, from the other world.