Heavenly Dragon Lord

Heavenly Dragon Lord (ヘブンリー・ドラゴンロード) is a Dragon Lord, one of the most powerful dragons in the New World.

Appearance
According to Maruyama, Heavenly Dragon Lord's size is comparable to a floating island. It is said to be so big that it has it's own ecosystem.

Background
Heavenly Dragon Lord was a Dragon Lord who did not enter the war against the Eight Greed Kings. It is not certain whether this means the Dragon Lord was born after the battle or it simply ignored the war. Either way, it has stayed alive from then until the present time. Currently, the Heavenly Dragon Lord is flying high in the sky all the time.

The Invaders of the Large Tomb Arc
Platinum Dragon Lord doubted whether it will help the fight against new hostile existences from YGGDRASIL.

Trivia

 * In a complimentary pamphlet for one of the Overlord Movies, Maruyama stated that the Heavenly Dragon Lord's body is more of an adventure-laden place than a living being. It is kind of similar to the True Dragons from the famous RPG game "RuneQuest", which in the game are said to be several miles long with geographical features.
 * Those who have seen it are usually overcome by shock. With time, they later start paying the dragon less mind.