I think I have an idea on what Ralsei might be (Image unrelated)

Ik this is marked as a theory, but it's more of a speculation cause I have gathered like, no evidence for it, but I think it's a neat idea that could be a good discussion

What if Ralsei isn't one specific object like other darkners, but is actually several objects instead?

So far every single place a dark world has appeared is a place connected to Kris, they have been in there, all of them are pretty likely to have some forgotten things of Kris's to be left behind, like maybe a green crayon, or a red horned headband and such...

Basically, my idea is that there is some sort of Ralsei hivemind, allowing Ralsei to be in every dark world so far, even if its a joke, he's also been referred to in plural a few times throughout the game too

(The more I type this out, the more it feels like a crack theory, also after typing this I think there's already a theory that's similar but I already wrote this out so I'm gonna commit to it)