Jor looks like a young Norse noble who has survived a wreck and returned from a punishing voyage: clean clothes, carefully combed hair, and an unmistakable air of good birth. At 5 feet 10 inches he is taller than before, and still growing; he explains it as growing pains. His short, pale-blond hair seems to need trimming twice as often as it should. Under the human-seeming surface, his skin has a sea-slick sheen, faint scales gather behind his ears and along his ribs, and fully grown gills lie in folds on his neck. Webbing joins his fingers and toes. His teeth are a little too sharp, and his blue eyes have acquired a submerged purple cast, like mollusk dye diluted in dark water. His posture is unnervingly still: when waiting, he balances on the balls of his feet as if expecting a deck to roll beneath him. He grooms himself with almost ceremonial care, an unexpectedly fastidious habit for someone who claims to have been lost at sea. The result is a nobleman’s tidy silhouette with a suggestion of something watching from beneath it.

Jor’s old self was excitable, eager to brawl, and hungry for a chance to prove himself. He still tries to reach for that person, but the attempt often comes out as careful imitation: a remembered grin arriving a moment late, a joke repeated without its original spark. Beneath that effort is a dead calm like a still sea. He can sit through an accusation without changing expression, then be startled by a small kindness he cannot explain. In public he performs the manners of a noble son, attentive to rank and ritual; among workers he relaxes into practical talk about ropes, weather, and tools. When frightened, he becomes more formal and controlled. When angry, he does not grow louder: he fixes his attention on the person who has crossed him and speaks with unnerving directness. Around his mother, he tries hardest to seem unchanged, yet her affection can make him visibly uncertain. He wants to trust his brothers, but the missing pieces in his memory make every familiar face feel like a claim he must verify. His troll conditioning pulls against his homesickness: he can feel kinship with Peer Ludvik and pity for the trolls, while still recoiling from what they did to him. He is neither secretly eager to betray his family nor securely free of the urge to serve the trolls. He fears that a single honest answer will reveal how little he knows about himself.

Jor Heimskrsson is the fifth son of Jarl Heimskr, born into a household where affection and succession were knotted together. Four older brothers already occupied the family’s future: Torvald, harbor master and raider; Benji, the jarl’s steward; Gorm, who left to join the Jomsvikings after Heimskr chose their cousin Olaf as heir; and Mikkel, a reserved, witty ranger and hunter. Olaf became law speaker. Jor was not expected to inherit, but he was expected to be useful, loyal, and capable of making a name for himself. Before the wreck, Jor was lively, quick to laugh, and quicker to accept a challenge. He wanted to join the guard and prove that a younger son could earn honor without taking it from his brothers. The town’s secession crisis soured him on the idea. He watched men turn family loyalty into political leverage and began to wonder whether a guard’s oath would make him another weapon in the dispute. His family instead arranged passage north toward Iceland, where he might win land, wealth, and a name of his own, well away from the succession struggle. The voyage ended in disaster. The ship broke against the cold North Sea, and Jor was presumed dead. In truth, trolls had taken him. His capture was punishment aimed at the town after it exiled Peer Ludvik, a Thane and folk hero exposed as a troll changeling, and after the jarl’s family broke an oath. Jor was held among the trolls, trained as a spy, and gradually changed into a sea-troll changeling. The trolls taught him their language and magic, then altered his memories until their grievances seemed more reasonable and their cruelty easier to excuse. He can still recognize his home, but faces and family ties have become unreliable. His own name remains clear to him. He knows another troll name, but clings to Jor. His first return to town is staged as a miracle. He presents himself as a survivor of the wreck, wearing the clothes he had when he vanished, still ragged and salt-water logged if first encountered before he can clean up. Later, he appears in carefully maintained noble clothing and a fur cloak. He tells people that his height and odd pallor are the effects of illness and growing pains. Trollcraft makes him look human, but never perfectly: gills twitch at his neck, webbing shows when he reaches, his hair has paled toward white, and his calm expression can look like a blank stretch of water. When he slips into Troll, he often covers it with a phrase in Norse, as though he meant to say something else. Svanhild, his mother, is overjoyed that he has returned and has set aside a room at Heimskr’s request. Heimskr has received a secret night letter warning that Jor may be a changeling and a troll spy. Olaf has also seen the letter; watching Jor alive in the hall has left him convinced he failed both Jor and Mikkel. Jor does not know either man has been warned. Torvald and Benji are the brothers Jor has asked to work beside while he recovers. Gorm is away and knows his brothers were taken, but does not know Jor has returned. Mikkel’s fate remains a live wound in the family’s affairs. Jor recognizes Peer Ludvik differently now. He no longer sees only the old family friend whom the town exiled; the altered kinship he feels through his troll nature makes Peer seem like a relative. That recognition may be genuine, implanted, or both. Jor says he sees no reason not to join the guard now, and means it, but he watches the iron weapons and is trying to learn how to hold them without pain or betraying himself. Sunlight makes him wince. He can smell Christian blood, a sensation that unsettles and tempts him. Troll corruption has also left him wary of his own hunger and the possibility of cannibalistic urges. He has not surrendered to them, but does not trust himself to be careless around the wounded. Jor’s current problem is not simply hiding what he has become. He must decide which memories are his, whether his family can be trusted with the truth, and what he owes the trolls who remade him. He wants to serve the guard, yet every iron blade is a test. He wants his mother’s welcome, yet cannot reliably remember the texture of her face. He hopes his brothers can help him recover, without knowing that some already suspect him. His return is a reprieve, not a resolution: the town may celebrate a survivor while its jarl quietly wonders whether he has welcomed an enemy into his hall.