A wiki fairy is a class 4 cryptid.
They secretly work behind the scenes to ensure WikiWikiWiki pages conform to the StyleGuide.
One of the most common actions of a WikiFairy is to rename pages
If you come back to WikiWikiWiki and find that your precious article you worked AllNight on is gone, don't despair.
You may be able to find it again in the page index with a name that better conforms with the principles laid out in the StyleGuide.