Yu-Long

Yu-Long is one of the Five Great Dragon Kings. He is the Jade Dragon known as the Mischievous Dragon, and is the partner of Sun Wukong. Like Sun Wukong, he is also a character featured in the Chinese novel Journey to the West.

Appearance
A green Asian Dragon.

Personality
A lazy but enthusiastic Dragon, self proclaiming himself as "The Liveliest Dragon" and is shown to love good food.

History
Yu-Long is a Dragon King that transformed into Monk Xuanzang's horse after eating his horse and helped in Xuanzang's travels. He then went missing along with Sun Wukong after the two of them completed their task of accompanying Xuanzang to retrieve Buddhist sutras from India.

Birth of the Breast Dragon Emperor
He was mentioned in Volume 4 when Ddraig explains to Issei about Ophis and the Five Dragon Kings.

The Heroic Oppai Dragon
He was mentioned again in Volume 7, this time by Tannin, who at the time was angry at Midgardsormr, claiming that he cannot stand lazybones like Midgardsormr and Yu-Long.

He made his official appearance in Volume 9 along with the original Sun Wukong, with Sun Wukong ordering him to aid Saji/Vritra against the mind-controlled Yasaka much to Yu-Long's displeasure but agreed after Sun Wukong says that he will treat him to Kyoto's cuisine.

Powers & Abilities
Immense Strength: As a Dragon King, Yu-Long is extremely powerful, being able to break through the barrier formed by the Longinus Dimension Lost (albeit using up a lot of his energy).

Shapeshifting: While having all the common powers of Dragons, in Journey to the West, Yu-Long also displayed the power of shapeshifting, assuming the form of a horse to replace the one he ate.

Trivia

 * Yu-Long is the youngest of the Five Great Dragon Kings.
 * Yu-Long is the second Eastern Dragon introduced in the series, the first being Vritra.