Rusk is broad through the shoulders and thick in the forearms, with a soot-dark beard cropped close so sparks cannot catch in it. His skin is permanently browned by furnace heat, and his short black hair curls damply at his temples. His hands are blunt, callused, and crosshatched with tiny pale nicks from years of metalwork; the nails are always dark with scale. In a room, his eyes travel first to hinges, buckles, and weapon grips, then to whoever is speaking. He walks with a measured, heel-first tread that makes the floorboards answer. Unexpectedly for a smith, he keeps a tiny pressed-flower bookmark tucked into the cuff of his work apron, carefully replaced whenever it crumbles.

Rusk is patient with honest beginners but brisk with people who pretend to know a craft they have never tried. He takes pride in being dependable, yet distrusts praise because he fears it will make him careless. At the forge he is methodical and almost gentle with a piece of metal; when someone threatens his family or apprentices, he becomes direct and immovable. In private, he is sentimental about small gifts and terrible at admitting it.

Rusk grew up in a river settlement where his mother repaired tools and his father made nails by the thousand. At nineteen, he took a post maintaining the bridgeworks at a remote mountain pass. During a spring flood, a damaged gate jammed while families were trapped on the wrong bank. Rusk stayed in the rising water to cut the gate free, saving several people but losing the old bridge and the settlement's only safe crossing. He learned then that a perfect piece of work can still fail if nobody asks what it must endure. He returned home, married the smith keeper, Odel, and built a reputation for tools that last rather than show off. Now a mine buyer named Vaska is pressuring Odel to sell their shop's old water rights, and Rusk suspects the buyer intends to divert the stream from the village mill. He has not told Odel that he forged a duplicate of the original water-rights marker and hid it beneath the forge floor.