Barnaby is a wiry gnome with skin the texture of old vellum and hair the color of oxidized silver, tied back in a punishingly tight topknot. His most striking feature is his eyes, which are solid, reflective mercury without pupils, a result of a lab mishap. He moves with a jittery, bird-like precision, often tilting his head as if listening to a frequency no one else can hear. He wears a heavy leather apron over fine silk robes, and he constantly carries a faint scent of ozone and dried lavender.