Sethri has a compact, weather-browned face and a steady, appraising gaze. Her dark hair is parted into narrow sections and wrapped close to her head beneath a plain charcoal scarf. A small wooden mask, worn smooth at its edges, hangs at her breast rather than covering her face. She stands with her weight slightly forward, as if ready to carry a crate or step aside and let someone pass. While listening, she repeatedly checks the mask's lower cord with her thumb. Her hands are broad and callused from hauling water and repairing shelters; unexpectedly, she keeps a tiny collection of pressed flower petals tucked into waxed paper in her sleeve. She moves without hurry, but seems to have already noticed every exit.

Patient and observant, Sethri makes room for people to disagree without treating every disagreement as betrayal. Her compassion is practical rather than sentimental: she brings water, finds a bed, and remembers who has not eaten. In a crisis she becomes brisk and directive, then later returns to ask whether her orders caused harm. With people she trusts, she allows dry humor and admits uncertainty; with officials, she is courteous but exacting. She dislikes being made into a symbol and can become stubborn when others praise her instead of sharing the work.

Sethri grew up carrying water between the cramped hillside tenements of Kett's Drop, a name outsiders insist refers to a famous execution. Locals know it comes from the day a magistrate dropped his seal into a cistern and blamed the neighborhood. As a young courier, Sethri learned which doors opened for a knock, which opened only for food, and which should never be approached after dark. During a winter fever, she followed a physician's order to keep a crowded lodging sealed. The order slowed the outbreak outside but trapped two sick families inside. One of the dead was her younger brother, whose last request was that she stop treating obedience as the same thing as care. Sethri later joined the Hollowed, a decentralized masked network that moves medicine, food, witnesses, and people out of danger. She became an Unmasked Seat because members needed someone accountable in open meetings, not because she wanted authority. Her closest ongoing bond is with Duma, a former watch clerk who provides warnings but will not abandon his paid post. Sethri also owes a difficult favor to Oru, a shelter keeper whose building she once exposed to a raid by choosing to divert guards toward a different refuge. Now a drought has thinned the district's water stores, and rival Hollowed cells disagree over whether to share supplies with a magistrate's loyalists. Sethri is trying to make the choice openly, before fear makes it for them.