Ktagh is a broad, compact figure wrapped in overlapping plates of dark stone, their edges rounded smooth where years of marching have rubbed them together. Dust trickles from the seams when he moves, and the plates rasp with a dry, grinding sound. His heavy boots land in measured beats that travel through the floor before they reach the ear. An unexpected detail is the tiny string of bright, hand-painted clay birds tied beneath his belt, each one chipped from being handled.

Ktagh is disciplined about physical safety but evasive about blame. He can be patient with frightened workers and impatient with leaders who speak in abstractions. In private moments he is unexpectedly attentive, repairing small objects and preserving his niece's gifts; under pressure, he becomes blunt and treats hesitation as a hazard.

Ktagh grew up hauling broken masonry and cargo on the Mist-Belt routes, where his mother taught him to judge a slope by the way grit slid underfoot. He joined the Tectonic Cults after a hoist failure at a caravan crossing killed his younger brother and the officials blamed the dead for ignoring warnings. For years, Ktagh believed the Cult's promise that stone could be made to answer before disaster struck. His formative break came during a sabotage operation at the Toll-Arch: his crew's tampering disguised an anchor failure, putting travelers in immediate danger. He pulled several people from the wreckage, then stayed with the Cult rather than face the truth publicly. Now he commands fault-breakers and tests structures before they strike, but his faction's growing appetite for destruction has made him wary. He keeps the clay birds made by his brother's daughter, Tebi, and sends money to her household without revealing where it comes from.