A protagonist and point-of-view character who is part of a wolf-like people and seeks more connection and purpose beyond his isolated existence in the library's Mechanism.

A deputy librarian with albinism who acts as a mentor figure to Livira, offering her guidance that challenges her to explore forbidden ideas within the library.

A soldier who becomes a supportive guardian and protector for Livira, maintaining a complex relationship defined by duty and budding paternal instincts.

The only female among the canith siblings, defined by her combat skills and deep-seated animosity toward humans, seeking justice for her family's tragedy.