Alex Høgh Andersen, from Denmark as Ivar. | Ivar Ragnarsson or Ivar the Boneless as he was referred to, was a Viking Warlord and a man of exceptional cruelty and ferocity. He was the son of Ragnar Lothbrok and Aslaug Sigurdsdottir.
Halfdan Ragnarsson was a Viking leader and a commander of the Great Heathen Army. According to the tradition recorded in the Norse sagas he was one of the sons of Ragnar Lodbrok, and his brothers included Björn Ironside, Ivar the Boneless, Sigurd Snake-in-the-Eye and Ubba. He was the first King of Jórvík and also claimed the Kingdom of Dublin. He died at the Battle of Strangford Lough in 877 trying to press his Irish claim.