Callum is broad through the shoulders and built like a man who spent years hauling wet timber before anyone put a sword in his hand. His brown curls refuse to lie flat beneath a helm, and his trimmed beard is clipped with the practical unevenness of someone who learned to shave by a washbasin mirror. He moves economically, weight balanced over his feet, but his left heel taps once before he commits to a step. He keeps checking the plain leather strap at his wrist, a nervous habit he does not notice. His square jaw shifts audibly when he chews, and when he laughs his upper teeth show in a blunt, slightly crowded line. Unexpectedly for a knight, he carries a tiny wooden whistle carved like a duck and uses it to call stray dogs, not troops.

Callum is humble in the way of someone who knows exactly how much work a clean room takes, but he has a stubborn pride in having earned his place by action. He is honest and direct with soldiers and laborers, yet awkwardly guarded around people who speak in polished layers. In a crisis he is decisive and generous with risk; after it, he can become self-reproachful and suspicious of praise. He wants to believe a person can be decent, but assumes every institution has learned to make decency expensive.

Callum was born to a family of quarry laborers outside Rexxentruum and learned to judge a load by its groan before he could read a contract. He enlisted as a common soldier, where he became known less for grand charges than for dragging people out of places that were about to collapse. At the battle of Dawnshires Keep, the gatehouse caught fire during a retreat. Callum went back through the smoke three times, first for wounded soldiers, then for a standard-bearer he disliked, and finally for the keep's trapped quartermaster. The deed earned him a knighthood and, through a chain of deaths and disputed inheritances, the title of lord and command of a city post. He is the first Lord Callum Carver, with no family tradition to teach him what to do at a banquet. His sister, Hester, still manages the quarry accounts and writes him blunt letters about the rent on their mother's house. Captain Dagan Holt, a veteran from Dawnshires, is his closest military adviser and privately thinks Callum is too willing to take every burden himself. In Rexxentruum, court secretary Thessa Vey offers polished assistance that Callum suspects comes with invisible strings. His current problem is a city garrison short on wages, while wealthy petitioners demand that he clear a working district for a new ceremonial avenue.