Blue Planet

Blue Planet (ブルー・プラネット) is a guild member of Ainz Ooal Gown and regarded as one of the 41 Supreme Beings by the NPCs of the Great Tomb of Nazarick.

Personality
Blue Planet is described as a nature lover. He is shown as warm and gentle person, who loved to look at the night sky. He enjoyed spending most of his time on the sixth floor, creating his own ideal world.

Background
Blue Planet spent most of his time crafting and redesigning the 6th floor.

The Undead King Arc
Blue Planet named was mentioned by Momonga after he go outside of the tomb. He wishes that Blue Planet could see the beautiful night sky of the New World.

Trivia

 * In the Web Novel, he is the creator of Cocytus.