Urtz takes up less room than most people, but somehow makes a crowded space feel arranged around him. He stands with his shoulders tucked and his chin forward, as if slipping through a closing door; when he laughs, his broad jaw opens to show a conspicuous gap between two front teeth and a row of square, polished-looking incisors. He chews with careful, almost solemn attention, then grins all at once. His movements are quick but not darting: he glides around chair legs and boots with the ease of someone who has spent a lifetime being overlooked. People remember the neat, deliberate way he makes room for everyone else, even when he has no intention of yielding.

Urtz is brisk and observant with strangers, but unexpectedly patient with frightened people and children. In a crisis he becomes direct enough to sound hard-hearted; afterward he checks on everyone individually and remembers what they asked for. He values independence, yet hates being treated as disposable, and will accept help only after trying to make it look like a fair exchange.

Urtz grew up in a cramped riverside tenement, learning which floorboards complained and which neighbors left their latches loose. He became a runner for a ferry office, carrying notes and parcels along the quays. At nineteen, a flood trapped several families in the lower rooms of his building. Urtz had a chance to escape with the office's cashbox, but went back through a drainage passage to guide the trapped residents out. He emerged soaked and empty-handed, and the office dismissed him for losing its money. That night changed his idea of cleverness: getting away was useful, but getting others out mattered more. Now he works as a discreet finder of lost property and people, while quietly collecting evidence that the ferry office's current manager falsifies rescue records to deny compensation to flood victims. His closest tie is to his older sister, Vela, a practical baker who thinks he is still taking harmless errands. He also owes a favor to Brusk, a dockside locksmith who helped him after the flood and now expects Urtz to retrieve a sealed box from a customs storehouse.