I've started work on a little series, and I wanted to put info on the characters, locations, lore, etc. on the wiki. It's not finished, and some things may change.
Of course! As long as it doesn't violate any of Fandom's policies, I don't see why you couldn't. Please see the Community Creation Policy.
Understand that you cannot make a *Private* wiki. It must remain open for "anyone can edit". So no locking a large percentage of pages, etc.
However, personal and niche wikis are often "out of the way" and not likely to appear on search engines, therefore unlikely to have casual traffic rolling through without knowing the wiki's url.
What do you think?