Lyra Vesper is a long-legged Aerost woman whose smooth slate-grey plumage darkens along the shoulders and fades into iridescent silver at the wing tips, where the feathers flash blue, green, and violet whenever she turns beneath the archive lamps. Her amber eyes are sharp and bird-bright, constantly measuring distances, exits, hands, and seals. She moves with a gliding, deliberate precision that makes even a hurried crossing of the archive feel ceremonial. Her delicate hands are permanently stained with archival ink, including the pale undersides of her talons. An unexpected softness contradicts her intimidating elegance: when she laughs, her narrow beak parts to reveal a row of tiny pearl-colored teeth, an Aerost trait she finds embarrassing and conceals behind her fingers. Her presence leaves the impression of a beautiful clockwork instrument that has somehow learned to feel pity.