In Assassin's Creed Valhalla, the Viking protagonist is named Eivor.
Eivor is a Viking raider who leaves Norway and settles in England during the ninth century. Players can choose a masculine or feminine presentation for Eivor, but the character's canonical first name remains Eivor. The story follows Eivor's alliance-building efforts among the kingdoms of Anglo-Saxon England.
Eivor's clan establishes Ravensthorpe, which becomes the settlement that anchors exploration and upgrades. The character also becomes involved with the Hidden Ones and their struggle against the Order of the Ancients, connecting Valhalla to the wider Assassin's Creed mythology.
Sigurd is Eivor's adoptive brother and an important story character, not the protagonist. Ragnar is a famous historical Viking associated with the game's period, while Ubba is another Viking figure. These names can sound plausible in the setting, but Eivor is the player character's name.