Frankly Daisy's one of the worst people from her universe to try and explain this stuff, at least so far as those deeply enough involved in it all to be able to even try goes. She didn't even know what she was serving by name until she'd long since lost her humanity to it and she's hardly the academic type, she never did any real research. What she knows she knows based on raw experience and Jon explaining the lines.

But she's had to give it a go many a time now, so... "Like— unknowable beings that sit just outside our dimension and screw with it. People try and understand 'em. And there's patterns in what they do, sure. They even whisper in the heads of people. But they're not something you can talk to. They just sit there. Making and feeding on Fear."