How To Create a Metaverse Persona?

It will depend fully on the Metaverse itself. In theory, you will need a form of unique identification, which you can create using NFTs. Users are free to do what or how they want to look like or which name they want to be called with. The appearance, habits, etc., will all factor into your persona in the real world. Users may need to buy customized wearables or skins, but it will depend on the users themselves.