In Assassin's Creed Valhalla, Eivor is the Viking name used for the main playable character.
Eivor Varinsdottir leads the story as a Viking who leaves Norway and helps establish a settlement in England during the ninth century. Players can choose a masculine or feminine presentation for Eivor, but the character's name remains Eivor. The game also allows the player to select Eivor's voice and appearance options.
Sigurd is Eivor's adoptive brother and a major character, while Ragnar and Ivarr are separate historical or story figures associated with the Viking Age. Those names should not be treated as alternate names for the protagonist.
Valhalla's English storyline takes place during conflicts involving several Anglo-Saxon kingdoms, including Wessex, Mercia, Northumbria, and East Anglia. Eivor also encounters the Hidden Ones, the organization descended from the group founded in Assassin's Creed Origins, continuing the franchise's long historical development of the Assassin tradition.