Thread:MrAnimatedToon/@comment-30953185-20171202171410/@comment-31647719-20171202182611

An idea, belief, or aspect of a story that is not mentioned in the media itself, but is accepted by either the media consumer themselves or the fandom in general. If it is confirmed by the creator of the story, it becomes canon.

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...and before you ask, yes I took it from a page.