Library is a lean, long-limbed male kenku with charcoal-black feathers that fade to silver at the throat and wing tips. He moves with a quiet, forward-leaning gait, often favoring his left side as though always making room for an invisible companion. His bright amber eyes remain unnervingly still when he listens, while his narrow beak clicks softly when he is thinking. He wears practical travel clothes beneath loose monk's wraps, with a weathered satchel full of copied pages, charcoal sticks, and small scraps of handwriting. A polished quarterstaff rests across his shoulders when he walks.

Library is observant, patient, and deeply curious. He prefers to watch a room before entering it and often communicates through carefully selected sounds, copied phrases, and gestures. He is kind to the frightened and respectful toward people who preserve history, but he becomes intense and possessive around books, maps, and personal letters. His low charisma makes his attempts at warmth seem strange, yet his actions consistently reveal sincere compassion.

Library was raised among a scattered kenku roost that lived in the ruined upper floors of an abandoned monastery. The roost survived by remembering what others had forgotten. They copied road signs, prayers, merchant marks, military commands, and fragments of old books, preserving knowledge through careful imitation. Library earned his name after spending an entire winter in a collapsed archive, repeating passages from surviving pages until the elders could reconstruct a catalog of the lost collection. He cannot create an original voice of his own, but he has learned to carry the voices of the dead with precision and care.