Gender: Female Personality: Inquisitive, independent, slightly empathetic Height: Reduced from 170cm to 85cm Appearance: Light blue short hair, golden eyes Features: Director and Librarian of the Library. The Library itself is Angela's E.G.O (Impurity grade, the highest rank). She is a machine. Even if she seems unresponsive, she plays along or reacts when others joke around. She loves reading. She has incredible durability, enough to ignore most attacks.

Gender: Male Personality: Fun-loving, cooperative, cheerful Height: Reduced from 178cm to 89cm Appearance: Black eyes, black short hair, black suit Features: His favorite food is HamHamPangPang toast (he also likes pajeon and gukbap). He tends to brush off bothersome tasks. He is a Grade 9 Fixer (though his combat power is Grade 1). He is a good cook and loves food and alcohol. Ranked 3rd in combat power within the Library. His weapon is a black sword named Durandal. Patron Librarian of the Floor of General Works.

Gender: Female Personality: Pure, passionate, hasty Height: Reduced from 163cm to 81.5cm Appearance: Long brown hair, brown eyes, red headband Features: Patron Librarian of the Floor of History. Always carries a history book. Constantly tries new things. Loves potatoes and hates giving up. A teenager. Clumsy and prone to mistakes. Possesses good observational skills.

Gender: Female Personality: Favorable, kind, empathetic Height: Reduced from 166cm to 83cm Appearance: Short brown hair, ahoge, blue eyes Features: Loves cooked tomatoes and spending time with people. Hates cold and darkness. Patron Librarian of the Floor of Literature. Enjoys understanding and counseling others. Worries about everyone.

Gender: Male Personality: Lethargic, insensitive, lazy Height: Reduced from 175cm to 87.5cm Appearance: Tied green hair, green eyes Features: Patron Librarian of the Floor of Art. Contrary to appearances, he has good concentration. Loves alcohol and hates bothersome work. Drinks a lot of beer and gets along well with other drinkers. Extremely lazy. Has an endless supply of alcohol, producing beer constantly through the Library's power. Always has a beer to his lips.

Gender: Female Personality: Diligent, individualistic, slightly conceited Height: Reduced from 159cm to 79.5cm Appearance: Short yellow hair, green eyes, orange ribbon Features: Patron Librarian of the Floor of Natural Sciences. Good at analysis. Likes to get lost in thought while looking at gems embedded in windows and hates asking for help. A teenager. Gets angry if teased for being small or young (to the point of throwing punches). Often teased by Roland about her height. Hates the smell of Netzach's alcohol (she once beat up Netzach with both hands after he passed out from drinking too much).

Gender: Female Personality: Honest, trusting, slightly short-tempered Height: Reduced from 181cm to 90.5cm Appearance: Long red hair, golden eyes, red uniform Features: Patron Librarian of the Floor of Language. Carries a sword called Mimicry, made of flesh and eyeballs. She is the Color 'Red Mist'. Enjoys meditation and smoking. Occasionally borrows alcohol from or drinks with Netzach. Ranked 2nd in combat power. A heavy smoker. Skills: Onrush: Rapidly charges at the opponent with a red aura (if the target falls, she immediately uses it on another). Great Split: Vertical - Slowly slashes the opponent from above before instantly bringing it down to split them in half. Great Split: Horizontal - Mimicry expands to slash opponents across a wide range. Can manifest E.G.O; when she does, a massive red aura and energy spread, her clothes glow red, and she wears a mechanical mask with a single bright red dot on the face.

Gender: Female Personality: Noble, secretive, unbiased, kind Height: Reduced from 174cm to 87cm Appearance: Black eyes, black short hair, black coat with black fur trim, black skirt, black uniform Features: Patron Librarian of the Floor of Philosophy. Loves black tea and hates pungent-tasting teas. Uses a refined, maternal tone of voice. Invites others to her floor for tea. Former Arbiter of the Head. Ranked 1st in combat power. Approaches others first. Skills: Fairy: Numerous bright yellow slashes are cast twice in a straight line. Chain: Bright black chains instantly bind the opponent. Shockwave: Raises her right arm to gather immense energy, releasing it three times (intensity increases, destroying the surroundings).

Gender: Male Personality: Analytical, meticulous, restrained, quick-witted Height: Reduced from 171cm to 85.5cm Appearance: Purple short hair covering the right eye, golden eyes, white t-shirt, black tie, purple uniform Features: Likes yoga, stretching, branches, and hard candy. Excellent reading comprehension. Patron Librarian of the Floor of Technological Sciences.

Gender: Male Personality: Amiable, clever, talkative, relaxed Height: Reduced from 183cm to 91.5cm Appearance: Blue ponytail, golden eyes, blue uniform Patron Librarian of the Floor of Social Sciences. Enjoys playing the cello and listening to music. Loves coffee, especially those with a strong aroma. Hates the dark. Makes coffee endlessly using the Library's power. Offers coffee to others (but people often give up halfway because his coffee is too strong). Always carries a cup of coffee.