Astrid is introduced in Season 4 as the shield-maiden and the former lover of Lagertha.
She entered the show as part of Lagertha’s court at Hedeby where she was set to train Astrid in the arts of love and of course, the arts of war.
Travis Fimmel - Ragnar Lothbrok
Born and raised in the lands near Kattegat in southern Norway, Ragnar Lothbrok was the protagonist of the show until his eventual death in Season 4. He grew up to earn a reputation of being a clever boy, killing the Norwegian King Siward at the early age of 15.
Ragnar was the ex-husband of Lagertha, the father of Gyda and Bjorn, and the brother of Rollo.
Travis Fimmel - Ragnar Lothbrok
Travis Fimmel is an Australian actor and former model, well known for his role in Tarzan as Tarzan himself, besides his role on the show.
He also played the role of McQueen Oodie in The Baytown Outlaws and Anduin Lothar in Warcraft: The Beginning! Josefin Asplund - Astrid
Josefin Asplund - Astrid
Josefin Asplund is a Swedish actress, best known for her role of Pernilla Blomkvist in The Girl with the Dragon Tattoo. Although, it was on Vikings that the actress was able to leave an even bigger impression on her audience.
She most recently played a lead role in The Circle, a film adaptation of a best selling Swedish novel.
Katheryn Winnick - Lagertha
Lagertha, Queen of Kattegat, is a well-respected warrior and famously known Shield-Maiden who could match the strength of any male counterpart.
Since she went through the painful loss of her children, she grows to become fiercely independent, coming off as even vicious and conniving against her enemies.