Disclaimer

This theory is only in early development so please take this with a lot of salt and add anything i may have missed or not have known about as well if possible.

Also theres a simple explanation at the bottom for those how don’t want to read so much.

Theory portion

what are they?

Filthloids are living things that have been corrupted by something unknown as of now.

What the parasite could be

- corrupted souls

- souls from failed universes - almost certainly false

- souls from a previous era

- weird magic - magic that doesn’t belong to a world

- an unknown race

- a magical creation out of control or purposefully designed to do this

- a clash of world rules -

- the result of magical energy becoming to abundant in a specific area and condensing into a filthloid

- chaos some how

- the mist is a parasite

- asks power being taken and others using it and being corrupted by it, since ask didn’t allow it

additional info on the parasite

- they affect the minds and personalities of charons

- they come in different power levels and people have certain resistance to then as well

- they can jump between hosts

- once they input some of their power into you they can not retrieve it or take it back.

- the parasites can choose their victims and prefers humans with animals being second behind that.

- also they don’t need to use magic for their physical bodies but prefer it.

Filthoids and their opposites, how they could possibly be made. Or for short charonism

Filthloids are most likely created due to the living being losing to the parasite. The reason this is thought of is because of deterioration and how it works.

Charons are created due to two things the bloodlines with in them and this parasite. The bloodlines are a base for the parasite to develop along with the individual and Charon marks are the biological changes the parasite adds or changes about the individual. Charon marks most likely are there to help the parasite control and invade the body fully.

Extra

Also charon marks are most likely a magic and flesh based material and the bloodlines within humans are mostly dormant unless a parasite influences the bloodlines within them or something happens.

Daimons are created when the parasite integrates more into the host but in return turns more of their body towards what they like.

Extra

But it should be said that there are exceptions to above where instead of just the individual winning the bloodlines are activated as well through this process but the bloodlines will be incorrect or corrupted partially. Ex: fina, outsider,

Also there are very rare situations where original soul can over power the parasites control most likely at least. Ex: i hope psyche falls under this

Genimon are successful animals that weren’t corrupted fully. Of course we have no idea why they appear the way they do. But it could just be side effects of the transformation.

Extra

This theory also extends to plants as well but we don’t know enough about them to determine how they would work.

Magic is ‘created’ or given to charons when the parasites lose and/or die. Then after their dead the remaining magic or soul power that was integrated into the charon to turn them into a filthloid or a host becomes there own.

Was created the theory

Also this theory was theorized because of how Mors’s parasite works and due to how charons, genimon, and filthloids look and the lore with them. It was also helped to a certain extend by Chinese and American folklore.

Simple version

‌All living beings in dna are able to contract or become a host to a parasite that turns them into a filthloid. This parasite inputs its ‘magic’ or soul into a being to turn them into a better host, and when successful they implant the core part of their soul into the individuals to take control of them. But this process can fail due to multiple reasons and leave mutations on the individual. The individual if not turned into a filthloid will be able to learn or have the ability to use magic.