- Alex Høgh Andersen (Ivar Lothbrok / Ivar the Boneless)
- Jordan Patrick Smith (Ubbe Lothbrok)
- Marco Ilsø (Hvitserk Lothbrok)
- Peter Franzén (King Harald Finehair)
- Georgia Hirst (Torvi)
- Danila Kozlovsky (Prince Oleg of Novgorod)
Vikings — S4E17
Episode: The Great Army
Air Date: 2017-01-11
Runtime: 44 min
Overview
The Viking army begins to gather in Kattegat. Lagertha must remain vigilant in the absence of her son, Bjorn.