Thread:SageM/@comment-46530157-20201003184302/@comment-24053170-20201003195512

An official website is something that is dedicated entirely to the series or franchise that it describes/mentions.

An unofficial site is something that just borrows content but realistically has nothing to do with the series at all. Rather its something that is either fanmade or was clearly thrown together without any real regard for the series whose content its using. (its why there are  wikias that are considered fanon in regards to the actual series rather than simply focusing on the content taken from the story)

If the site doesn't use the actual information from the series, or only seems to be using it for a purpose other than cataloging and expanding on the backstory/story/franchise. Then odds are its not an official site.

its pretty easy to tell which is which if you look at how its set up.

This is the official samurai jack wikia, and is dedicated entirely to the franchise and all aspects of it. Villains wiki is an unofficial site which borrows information from other sites and wikias for purposes other than the dedication and explanation of the actual series.