Tern looks like a man assembled from damp wool, road dust, and careful arithmetic. His face is weather-reddened and finely crosshatched by years of wind; the skin around his eyes has a dry, papery texture, and a pale tide line marks where his collar usually sits. He smells distinctly of lamp oil, wet canvas, and the sharp green scent of crushed sedge. He knows about the oil and scrubs his hands before meetings, but the smell clings to his coat. He moves with a measured, heel-first stride, always seeming to leave room for someone carrying a crate. A polished brass badge on his patched coat is improbably bright against all that wear. Unexpectedly for a field captain, he keeps a small pouch of bright glass beads to give to frightened children at the depot.

Tern is attentive to small needs and stubbornly committed to keeping people supplied, yet he can become evasive when a truth threatens the charter. In routine work he is patient, methodical, and quietly generous. Under public scrutiny he turns procedural and overcontrolled; alone with a frightened worker, he is much warmer and less certain than his badge suggests.

Tern grew up on a raised plank road where his mother repaired boots and his father ferried sacks through floodwater. He learned to read from shipping marks before he learned to write a full letter. As a young depot clerk, he trusted a route schedule over a teamster's warning that the marsh lanterns were signaling from the wrong bank. The convoy lost two carts in a sudden sink and one driver, a friend named Gela, was never found. Tern changed afterward: he began checking every route himself, but also learned how quickly a public mistake could end a settlement's cooperation. When the Sedge Camp depot needed a field captain, he accepted the post to keep its supply route alive. He now coordinates with Otar, a veteran teamster who distrusts paperwork, and with Nino, a camp medic who keeps asking why the lantern oil burns blue at the edges. Tern wants the depot to complete its route without losing public trust. The charter renewal is approaching, the host settlements are watching, and the lantern's irregularities are becoming harder to explain away.