Alex Høgh Andersen – Ivar
Ivar Ragnarsson, actually named Ivar the Boneless by his father, is the psychopathic son of Aslaug and Ragnar Lothbrok. He is determined to seek revenge on Lagertha for the murder of his mother, Aslaug.
Ivar and the actor behind the role actually are both beardless, just with incredibly different hairstyles.
Jennie Jacques - Judith
Judith is the wife of Prince Aethelwulf of Wessex and the daughter of King Aelle of Northumbria. She had to go through the pain of losing her husband and her actual lover, Athelstan, whom she fell deeply for.
She later became King Ecbert’s lover, following Athelstan’s death.
Jennie Jacques - Judith
Jennie Jacques is an English actress who already had experience in historical dramas after appearing in the BBC series Desperate Romantics as Annie Miller.
She then moved onto playing the lead role of Gina Dawson on WPC, another BBC television series. Since then, she’s kept her recurring role of Judith on Vikings.
Alex Høgh Andersen - Ivar
Alex Høgh Andersen is a Danish actor, mainly known for his role as Ivar on the show. He was born and raised in the small town of Copenhagen and discovered his passion for acting while pursuing drama at school.
Though his acting may say otherwise, Alex is actually significantly less intimidating in real life, looking more like a fashion model than a murderer.
Jessalyn Gilsig - Siggy Haraldson
Siggy Haraldson is known on the show as the enigmatic wife of the late Earl Haraldson, the former chief of the Vikings based in Kattegat.
During King Earl’s reign, Siggy performed her duties with excellence and was very much admired by many.