Lydia (mother) A cunning, mysterious Viking who commands a mercenary band of vikings, of which Thorfinn is a member. Askeladd is a tactical genius and a master swordsman. His ability to manipulate those around him turned a horde of pirates and raiders into a close-knit group loyal to him, as well as proving him capable of turning enemies into allies, as seen with Thorfinn, Thorkell, and Prince Canute. Askeladd is named after the Norwegian fairy-tale character Askeladden, known for his cunning nature and cleverness. (Source: Vinland Saga Wiki, edited)

Erwin Smith is the Commander of the Scouting Legion, known for his foresight, intelligence, and drive. His ultimate goal is for humanity to return to its former glory and would sacrifice any number of his men for the sake of mankind as a whole.