Thread:PanSola/@comment-12719-20171102001958

Currently it's slightly inconsistent, so I want to start with one rule: Where the article is a member of a type, and there is a category for that type, then its category name should be written in plural form. Example: Kaizaki is a earthling, and if we make a category to keep track of earthlings, it should be named Category:Earthlings (plural) instead of Category:Earthling (singular).

I don't actually have a strong preference whether it goes plural or singular, I just want something consistent.

Not all categorization describe a type-membership relationship, so this rule wouldn't matter to some categories. For example, there could be a category named Category:Aoba Highschool, and it wouldn't be plural, because that category doesn't contain different Aoba Highschools inside (it is more of an abbreviation of "Articles related to Aoba Highschool") 