Thread:Jr Mime/@comment-24665315-20160805184141/@comment-3474542-20160809002614

Category pages are a bit weird. They can display pages in that category without actually having been created. It may be best to think of a Category page as a gigantic "What links here" page, which you can customize with a description.

You may want to read the help page for categories on the English-language (Help:Categories) or German-language (Hilfe:Kategorien) versions of Wikia. They may be better able to show you how category pages work than the brief summary on the NL Wikia's help pages.