Dragon Crowned Princes

The Dragon Crowned Princes also known as The False Dragon Emperors is a special class of dragons known for possessing abnormal powers and abilities. Their strength varies heavily with Kaos being on par to the Heavenly Dragon Emperors while some are noted to be slightly stronger than the average Earth Dragon. The term was first created by Tannin and later used to describe the humans who inherited the Chaos Gear Sacred Gear, possessing the spirit of Kaos, the Dragon Crowned Prince of Chaos inside of them.

Summary
After the death of Kaos, with only Draco alive, this left a imbalance in the world as the world slipped too heavily to Order instead of Chaos and therefore powerful dragons with abnormal abilities began to appear. While most of these dragons typically were left to their own devices, some of these dragons were too powerful and too destructive for most mythological factions to tolerate and as a result numerous dragons were hunted down and slain for centuries. Tannin then decided to take some of these dragons and train them in his territory in order to cease the war.

Appearance
These dragons are noted to have a wide array of different appearances, with some dragons possessing typical human appearances (while some can also have wings and horns), some Chinese dragons, and even European dragons. These dragons also aren't hatched from eggs and instead are born directly from energy due to their abnormal powers and bloodlines.

Kaos
The first dragon of this class who possesses the title of Dragon Crowned Prince of Chaos, also known as the False Chaos Dragon Emperor. A powerful dragon who trained alongside Ddraig and Albion he possessed a special ability known as "Copy" which allowed him to copy the powers and abilities of others, even other dragons, at the cost of a fraction of this lifespan. He used this ability on Ddraig in order to obtain his [boost] ability. He was famous in both the human world and underworld for his various rampages and was noted to have particular cult followings in the human world. After the death of Ddraig and Albion in a blind outrage he attacked and killed a angel leader causing the three factions to join forces in order to kill him, with Kaos being betrayed by his own brother, Draco who used his own special ability to subtract and cut through Kaos's attacks. He was later killed and sealed inside of a sacred gear, Chaos Gear.

Draco
The second of the original two, known as the Dragon Crown Prince of Order. A powerful dragon however he lacked as much power as his brother. He was jealous of his brother for his power, that interested both Albion and Ddraig, his luck with women, and his immense pride and as a result betrayed his brother resulting in his death and him being sealed in a sacred gear. After the incident and with other dragons turning their back on him, Draco is currently hiding on Earth in a unknown location. He possessed the special power of [subtraction] allowing him to subtract attacks, space, and matter around him. He could also create fields that would subtract any attacks he wanted out of existence. He is considered the complete opposite of his brother in terms of abilities resulting in his unique nickname.

Hong and Jiang
also known as the Rainbow Dragon Crown Prince is a name shared by the two headed dragon. While one of the dragons was known to be a trickster, Jiang, only concerned with using his power to to play tricks on humans, while also seeking the one thing his power couldn't manipulate into existence, a beautiful woman to love him, while Hong was concerned with using his power simply to fight powerful opponents. One day Jiang tricked his brother Hong into attacking a kingdom in the human world due to the promise of a powerful opponent. The two brothers split and while Hong fought against a Chinese Dragon hunter, Jiang sneaked into the Kingdom and stole the Emperor's daughter. The two brothers then reconnected and while the two were busy bickering over what to do now the same Chinese Dragon hunter found the two and cut the dragons heads off. The two's souls was then sealed inside the sacred gear, Monochrome Null.

Kayda
also known as the Volcano Dragon Crowned Prince. Is a powerful dragon on par to Hong and Jiang. Once employed by a master magician who used her to carry out tasks as her familiar including but not limited to transporting information, settling deals, fighting or scaring enemies, etc. After the magician's death at the hands of stray exorcists, who saw all magicians as allies of the devils, in outrage she started rampaging across England destroying and burning down villages and anything that crossed her path. She was then found by Dragon king Tannin becoming the first Dragon Crowned Prince to be trained by him. She later left after said training and her current location is unknown. She possesses a special power known as [reinforcement] which allows her to increase her defense every ten seconds by adding layers of volcanic rock on top of her already dense scales which makes her invincible at the cost of her speed and mobility. She can also release magma and steam from these layers of volcanic rock that can heavily damage opponents. She can also release lava from her mouth that is noted to burn and cool over time rather quickly similar to the lava of a volcano.

Trivia

 * Some of the lore was loosely based off the Force in Star Wars.
 * While the Seven Deadly Sins could technically be considered dragons of this class, since they were created by Satan they aren't.