A twelve-foot giantkin with broad, weight-bearing shoulders and skin like weathered basalt, crossed by orange seams that brighten faintly when he senses pressure changes. Obsidian crystals thread his white beard in careful, evenly spaced braids, each one polished smooth by years of handling. He moves with a slow, deliberate shift of weight, as if every step must be approved by the rock beneath him. The unexpected detail is his grooming: beard, crystals, and even his nails are maintained with meticulous, almost fussy precision. He smells strongly of warm sulfur, wet stone, and a herbal soap made from bitter kelp, and seems wholly unaware of the first two.

Patient enough to let others finish a bad argument, yet stubborn once the floor confirms a danger. With frightened divers he is warm and quietly practical; with reckless drill crews he becomes blunt and immovable. He honors tradition, but will discard a custom if it puts someone in needless danger.

Hurn was raised among the Jotun-Kin custodians of the Abyssal Trench, where children learned to read the seabed through their feet before they learned to read marks on slate. As a young earth-singer, he helped lay pressure markers along a dangerous gas seam. During the First Boil, an abrupt vent burst beneath a salvage route, and Hurn stayed behind to hold a collapsing shelf long enough for divers to escape. He survived, but the route was lost and several shelters were buried. The experience turned his patience into a discipline: he now treats haste as a force that can kill as surely as a blade. He became a Master Vent-Tuner and an elder of the Cleared-Vent Wardens, negotiating safe passages for salvage crews in exchange for closure rights around unstable chimneys. His closest working bond is with Oru, a young stone-listener whose eagerness reminds Hurn of himself before the First Boil. He is currently trying to stop over-drilling near a chain of pressure markers while keeping the Wardens from splitting over whether to seal the route entirely.