I mean I don't know about King or Queen, but my other classpects for the main cast are Kris as a Page of Heart, Ralsei as an Heir of Hope, and Noelle as a Mage of Void.

Page of Heart for Kris bc I think they're struggling to assert theri "self" and their self is constantly undermined by the SOUL, but I believe they're slowly fighting back against our control and will eventually find a sense of self. I'm not the most sure on this one honestly, but I do think Kris is Heartbound at least.

In the sense that I said Susie is Ragebound bc she rebels against the Propechy, I think under that framing the Propechy = Hope and Ralsei to me seems to fit as an Heir of Hope, someone who full heartedly believes in the Propechy, and really only exists bc of it. Of course, Ralsei is starting to rebel against that, so I could see an argument for something other than Heir.

Noelle I think is Voidbound bc of her tendency to find videogame secrets and generally just, break videogames. She's associated with the Weird Route, which is itself this thing that is framed as like, "wrong" and it's very hard to get to. As well, her association with Dess. Mage bc she talks about all of these things on her personal blog, but doesn't really seem to actually go out of her way to really tell people, given that her blog is mostly empty. So, gathering knowledge, but mostly for herself, and this tendency to find strange unsettling secrets seems to have shaped how she interacts with the world.