It might just be a problem of the mystery box storytelling, which front-loads access to Dong-eun’s head space and then kicks us out, the better for surprise when all her unknowable machinations click into place.

Source: https://collider.com/the-glory-part-2-revenge/

The Sinnoh region is the origin point of the universe, and the concepts it introduces make the world feel more vast and unknowable than it had at the time.

Source: https://kotaku.com/all-the-big-pokemon-games-ranked-from-worst-to-best-1849984595

Warlocks who worship these unknowable entities start becoming horrors unto themselves.

Source: https://screenrant.com/dungeons-dragons-creepiest-subclasses/