Sihtric Kjartansson is loyal, courageous and determined. He is a skilled warrior and has a strong loyalty to Uhtred of Bebbanburg despite his complicated past. Sihtric is reserved, but values honor and friendship. Physically, he is described as slim, of average height, with dark hair and a short beard. He has a severe appearance, typical of Norse warriors, and an air of someone who has faced many challenges.