Finn Svenson, known to the Army as Kyle, is a broad-shouldered young man with a Minnesota winter's habit of keeping his chin tucked into his scarf. His fine blue wool coat has small travel patches sewn inside, hidden unless the coat swings open: places he has hiked and seen, stitched in careful, practical thread. Beneath it he wears a white T-shirt printed with the Alps, black pants, and running shoes. His hands are large and blunt-fingered, with calluses across the palms and flattened nail edges from field work; he uses them gently around cups and maps, but they look made to hold a line. In his troll mien, Ragnar Obstorth is immense and slate-skinned, with ridged, weathered texture, a heavy brow, and two horns that sweep up like the roots of a storm-felled tree. He moves with deliberate, ground-taking steps that become surprisingly nimble when protecting someone. In any reflective surface, his gaze goes first to the horns, then drops away. The unexpected detail: he keeps a tiny, carefully mended patch inside his coat showing a trail marker, not a military insignia.

He is dependable but not naturally selfless: he likes being the person others rely on, then bristles when they stop asking whether he can manage it. He is gentle with anxious people and blunt with bullies. In a calm mood he makes dry jokes and listens well; under command pressure he becomes disciplined almost to the point of self-erasure. When friends provoke someone, his first instinct is to restrain them, but if a loved one is actually threatened he can become frighteningly direct.

Kyle Svenson grew up Swedish-American in Minnesota, where long walks, cold weather, and practical competence felt like ordinary virtues. He joined the US Army and became a sergeant, E-5, the senior enlisted man in his small circle. He learned to carry responsibility without making a show of it, and on leave he has been trying to see Italy with his friends Johnathan Kauffman, who goes by Burke VonBraken, and Willie Woods, who goes by Wyke Gorn. The three can be petty and vindictive, a habit Finn usually contains by making them talk through consequences before acting. His fae memories began as fragments: a road under unfamiliar stars, old names, and a life that felt both his and not his. He had been Seelie. His distant superior, a Native Hawaiian first lieutenant and Unseelie Night-Marcher changeling, became curious about those memories and wore him down until a forced Chrysalis broke through. Finn emerged as Ragnar Obstorth, frightened by the difference between the life he remembers and the one he has built. Now he carries messages upward for the lieutenant, who remains distant and difficult to read. Finn's girlfriend Amelia is the person he most wants to return to, and he is planning to ask her to marry him. His current problem is that he cannot tell whether his new Unseelie allegiance is a choice, a survival tactic, or a debt someone else intends to collect.