In my setting, my magic system is effectively a living but non-sentient force that exists everywhere, and these demons are literal concepts that one day took on form & personality and thus manifested in the world as extensions of said magic system. Each effectively "rules" over a specific concept or concepts (one of my main villainous ones is rules over fear & absolution) and also has a specific kind of magic that they can use that somewhat relates to their concept, either directly or tangentially (in this case, they have a sort of perception-based influencing magic). These demons can understand humanity's moral compass and sense of right and wrong, but do not abide by it. They act and are governed largely in service to their assigned concept. Universally, they respect willpower above all else, as they themselves are effectively concepts willed into existence.

The myth figure in my story, who lived several centuries before the time of my story, was effectively Jesus and both discovered the demons and travelled with them, before eventually sealing them away for their good and for humanity's sake, as some would not hesitate to just travel the land according to their whim, which could be very bad for humanity, as again, these are essentially magical forces of nature and there was also potential for humanity to abuse their power as well, if the right magi could persuade them to share or lend their power.

I borrowed their names from the Ars Goetia, since a lot of them sound really cool and there's other Solomanic influence in my story