Oleg of Novgorod
Russian actor Danila Kozlovsky joined the series for the sixth season, as Oleg of Novgorod, the 10th century Varangian (east European Vikings) ruler of the Rus people. Katheryn Winnick, who portrays Lagertha in the series, directed an episode of the season. Music for the series was contributed by Scandinavian artists with strong Nordic folk influences, including Wardruna and Danheim.