His name is Mörkö. You pronounce it like 'Merrrrke' with a trilled 'r'.

It is the Finnish name for a generic scary being. Perhaps human, perhaps not. Like 'bogeyman' in English.

We don't know much, but what we know can be found in

stalburg.net/Mörkö

Use the link I supplied above. I'm just testing additional links.

https://stalburg.net/Morko

https://stalburg.net/M%C3%B6rk%C3%B6

thanks bro