Board Thread:Admin Noticeboard/@comment-4820209-20170226232454/@comment-4820209-20170227024908

Because the Millennium continuities, while separate, would also be minor stub pages if separated into individual articles, and would basically fill up needless space. It's easier and more efficient to condense them all under a banner and make the stern distinction that every Godzilla and Mothra are separate characters between movies within the Millennium continuity.