I once tried writing a bit with demons being like the "demons" sometimes used in philosophy where they're more like mysterious, reality altering things that sort of hide between our understanding of the universe and the unknown as opposed to scary monster things. It didn't really go anywhere. The person I was writing with vanished on me. I still think it's an interesting concept though and it sort of fits this post

Edit: I realize this is an odd concept, this is what I mean by "philosophical demon" lol. https://en.wikipedia.org/wiki/Demon_(thought_experiment)

In thought experiments, philosophers and scientists occasionally imagine entities with special abilities as a way to pose thought experiment or highlight apparent paradoxes.

The word "demon" here does not necessarily connotate a demon, a malevolent being. For instance, when William Thomson (Lord Kelvin) came up with the Maxwell's demon, to highlight the implications of James Clerk Maxwell statistical interpretation of thermodynamics. He used the term in analogy to daemons in Greek mythology, supernatural beings as unseen forces of nature.