Genjiro

Genjiro (源次郎) is a guild member of Ainz Ooal Gown and regarded as one of the Forty-One Supreme Beings by the NPCs of the Great Tomb of Nazarick.

Personality
Genjiro is described as a person who took pleasure in keeping things neat and organized.

Background
Genjiro is responsible for organizing all the contents within the Treasury. Specifically, he separated the items into specific categories: armors, weapons, jewelry, auxiliary tools, consumables, manufacturing goods, etc.

The Undead King Arc
Prior to YGGDRASIL's silent shutdown at the end of the game, Momonga recalls all the good times the members of the Ainz Ooal Gown including Genjiro. In Momonga's lamentation of his fellow guildmates' departure a few minutes before him, the Great Tomb of Nazarick and all of its NPCs were transported to the New World.

The Bloody Valkyrie Arc
Ainz reminisces about Genjiro when he goes to the Treasury. He remembers that Genjiro took pleasure in keeping things neat and organized, and would have categorized objects according to their purpose. However, Ainz wonders whether Genjiro actually relishes tidiness, because if he truly did, the items in the treasury would be managed more orderly, and he would not describe his own room as a mess. Ainz remembers that Genjiro should have already separated the items into categories of armors, weapons, jewelry, auxiliary tools, consumables, manufacturing goods, etc. as well as the Nazarick maintenance room and the data crystal storage room.

Main Equipment

 * Ring of Ainz Ooal Gown: It allows the user to freely teleport between every room inside Nazarick. Every member of Ainz Ooal Gown was required to wear this ring.

Momonga
Genjiro was one of Momonga's friends that had been with him and the other clan members since Nine's Own Goal. Momonga doubts that Genjiro was actually a neat man as he argued. After seeing the gold outside the Treasury, Momonga thought that his friend should have done so more orderly.

Entoma Vasilissa Zeta
Genjiro is Entoma Vasilissa Zeta's creator.