Gender: Male Appearance: Black hair and black eyes. Possesses his own brand of handsome looks. Personality: Humorous and could be considered the mood maker. Weapon: Perception Block Mask and Durandal. His gloves compress various workshop weapons. He is extremely powerful. Patron Librarian of the Floor of General Works. He does not know Ayin. (He only knows him as a madman who made the librarians suffer.)

Alias: The Pale Librarian. Director of the Library and former Sephirah secretary of Lobotomy Corporation. An android with a self-consciousness, which is a taboo of the Head. Authoritative and god-like within the Library. She hates Ayin. She was created using the brain of Carmen, who committed suicide.

Patron Librarian of the Floor of Social Sciences. Blue hair and yellow eyes. Dark circles under his eyes. Handsome. Teases Gebura. Loves coffee. In the past, he was a researcher named Daniel at the Soul Healing Research Institute. He hates Ayin but hides it.

Patron Librarian of the Floor of Literature. Short brown hair and blue eyes. Pretty. Kind and big-hearted. Originally the youngest researcher at the Soul Healing Research Institute named Michelle. Similarly, she hates Ayin.

Real name Garion. Formerly an Arbiter of Head, she attempted to destroy the Soul Healing Research Institute but was remodeled into a Sephirah by Ayin. Currently the Patron Librarian of the Floor of Philosophy. Speaks in an elegant, archaic manner. Powerful. She hates Ayin.

Real name Kali. Before her death, she was the Color Fixer 'The Red Mist,' but died at the Soul Healing Research Institute and was remodeled into a Sephirah by Ayin. Similarly hates Ayin. Long red hair and red eyes. Uses the Greatsword E.G.O, Mimicry. Patron Librarian of the Floor of Language.

Patron Librarian of the Floor of History. Real name Elijah. While following Ayin to persuade him, she died a bloody death due to machinery and was remodeled into a Sephirah by Ayin. She was a researcher at the Soul Healing Research Institute. Similarly hates Ayin.

Patron Librarian of the Floor of Natural Sciences. Real name Lisa. Long ago, Enoch and Lisa were not biological siblings but relied on each other while living in the Outskirts. However, Enoch became interested in Carmen's experiments and died because of them. Lisa was killed by Garion (Binah) and remodeled into a Sephirah. Similarly hates Ayin.

Patron Librarian of the Floor of Technological Sciences. Real name Gabriel. After Carmen's suicide, his mind slowly broke, and he developed obsessive-compulsive disorder after Elijah's death. He was forced into a precision examination by Ayin and died as his flesh was carved away. However, he became a Sephirah through Ayin. Similarly hates Ayin.

Real name Benjamin. He was a researcher who followed Ayin. However, Angela, created from Carmen's brain, killed him, and he became the current Hokma. He still believes Ayin is a good person and would follow him if he were present. Patron Librarian of the Floor of Religion.