On Wikipedia:

Within Wikipedia, notability is an inclusion criterion based on encyclopedic suitability of a topic for a Wikipedia article. The topic of an article should be notable, or "worthy of notice." Notability is distinct from "fame," "importance," or "popularity," although these may positively correlate with it. If a topic has received significant coverage in reliable sources that are independent of the subject, it is presumed to be blah blah blah.

On Panfandom:

The Management does not care. You want a page to list your fanfic, go for it. Don't be a jerk and link to it on pages that aren't appropriate, but really? If you want a page about something, you're not a troll, and we can't think of any other reason not to have it, it's no skin off our teeth.