3. Akaname
This is a Yokai and its name means Filth Licker. This yokai has a goblin-like appearance, small-ish between the size of a child or a small adult. It has greasy and slimy hair its naked body is greasy as well.
The yokai loves filth and would eat any filth it can find such as mold, scum, human waste and more. So loving these filthy things, they are not limited to dirty toilets, they like dirty bathrooms and abandoned houses as well.
They would only come out at night and would start licking all the filth it could find. Then they would lap up the slime, grease, hair and whatever filth it could get. They would “clean” the floors, the walls and even behind the toilet with their extremely long, sticky tongue.
Apparently, they prefer not to be seen by humans. Also it is said that they can spread diseases. I guess that’s because of its behaviour of filth licking which is infested with germs.