Thorfinn, commonly known as Karlsefni, is the main character in the manga and anime Vinland Saga. He is the son of Thors, the most famous Jomsviking warrior until his defection and a former warrior of Askeladd’s company. Thorfinn is related to the Jomsviking leadership through his mother Helga, who is the daughter of Chief Sigvaldi and Thorkell’s nephew.
Thorfinn was enslaved as a punishment for attacking Canute in a frenzy after the latter killed Askeladd, the death of whom had been Thorfinn’s ambition for most of his life. He won his release four years later and changed his life. He is currently a travelling trader aiming to conquer Vinland with Leif Ericson.