Monsters origin?

[Ge15t]

I cant find the frictional page, but its on the concept of the monsters in the pre production phase. They said that the 'monsters' are just people that have been taken over by 'something' from another world (same as kaernak maybe?). In the wine cellar part, maybe this is what you can hear in the flashbacks from the people locked in there. Quote: "it feels like my chest is being ripped apart!".

*SPOILER* and since alexander has come from another world (which, is safe to assume is the same as where the monsters have come from) we can assume this is why he can control them