For the upcoming Assassin’s Creed game, Ubisoft is switching up the storyline with a unique story mode where, besides choosing over a male or female avatar, you can let the “Animus” decide your character at points of the story.
This info comes from the latest deep dive video, which also explains how the mechanics and gameplay players would do in the game, along with the customization options for you clan and avatar.

Speaking to Eurogamer on this choice, Ubisoft has confirmed that all three choices are canon and doesn’t impact the main story at all. So play the new AC whichever way you want.
Assassin’s Creed Valhalla will launch on 10 November for PS4, Xbox One, Xbox Series Consoles and PC. The PS5 version will launch on 12 November.