https://wccftech.com/assassins-creed-valhalla-mod-eivor/

This new Assassin’s Creed Valhalla mod is among the first modifications for Ubisoft’s latest Assassin’s Creed installment and allows users to customize their character.

Created by modder ‘Hypermorphic’, the ‘Eivor Customizer’ mod allows users to make use of additional NPC models in order to customize the appearance of the game’s hero. Since additional customization options for Eivor haven’t been officially included by Ubisoft, unwanted side-effects can occur. As such, players are advised to back up their save files prior to using this mod.