Which Assassin's Creed game introduced protagonist Eivor and a Viking-era setting?

Assassin's Creed Valhalla introduced protagonist Eivor and a Viking-era setting.

Released in 2020, Valhalla follows Eivor, a Norse Viking who leaves Norway with a clan and settles in England. The story is set mainly in the ninth century, during conflicts involving Anglo-Saxon kingdoms and Viking groups. Players can choose a male or female presentation for Eivor, but the character's name remains Eivor.

Eivor becomes connected to the Hidden Ones while building a settlement and forming alliances across England. The game includes raids, longship travel, settlement development, hunting, exploration, and large-scale battles. It also revisits the series' recurring conflict between Assassins and Templars through the Hidden Ones and the Order of the Ancients.

The title is sometimes mistaken for Odyssey because both use role-playing systems and feature ancient-world settings. Odyssey takes place in classical Greece and stars Alexios or Kassandra, whereas Valhalla is centered on Viking migration and England.