Originally posted by squashplayer1:

First time I thought I had played too long but this time I made a screenshot:

https://imgur.com/a/gNyUF5Z

Who is this? Does he have any function in the game?

Thx

I believe that at this point we don't officially know who he is. He's randomly seen at night and disappears when you get too close.

The most accepted theory is that he is Odin.