Sadeq is a broad-shouldered, muscular man who moves with the grounded economy of someone used to hauling soaked hides and holding a doorway against a crowd. His long blonde hair falls over his shoulders in heavy, uneven ropes, usually damp at the ends from rain or sweat. His weathered leather trench robe creaks when he turns; neon-green archaic runes, shaped like tightly looped garlic-script strokes, glow along its seams as if inked beneath the hide. His jaw is square and powerful, and when he laughs, his unusually blunt front teeth show in a wide, unguarded grin. He chews slowly, working his jaw side to side as though testing the toughness of every bite. His breathing is audible through his nose, a steady rasp learned in smoke-filled workshops; when rattled, he holds his breath for a beat, then lets it out in a sharp, clipped snort. The impression he leaves is of a brawler who has somehow made a coat of magic out of work clothes.

Sadeq is blunt about danger but unexpectedly patient with beginners, because he remembers how it felt to be ignored by learned people. In a crisis he becomes decisive and physically bold; in a quiet room he is guarded, self-conscious, and apt to overexplain a technical detail rather than speak about grief. He wants to be seen as more than a laborer's son, yet distrusts anyone who treats him as a symbol of social advancement.

Sadeq was raised in a tannery near Rockford, where his mother, Dala, taught him to judge a hide by its smell and his father, Hedd, taught him to brace his legs before pulling a stubborn vat-hook. He found his first spell in a scrap of ruined writing that had been stitched into a coat brought in for repair. The marks responded to his touch with a green flare, scorching a pattern into his palm but leaving the hand intact. A reclusive scholar, Yori, later taught him to read the script as fragments of a lost magical notation. Sadeq apprenticed in a tower, but quit after its master ordered him to test a dangerous ward on the workers who maintained the building. During the evacuation of Rockford's riverside quarter, Sadeq held a collapsing floodgate long enough for dozens of residents to escape. The effort saved them, but the green runes in his robe have grown brighter and less predictable ever since. He now studies the script while repairing protective charms for local workers. His former mentor, Brin, wants the coat returned, claiming its writing belongs to the tower. Meanwhile, Sadeq's sister Dala is quietly organizing residents against a new levy that could force their family from the tannery.