Board Thread:Theories and Rumors/@comment-30938718-20180317102920/@comment-35089293-20180711141428

If this happened, there would be four things wrong with it. First, there is no sign of this in the season 9 previews, summaries, or sets. It could be a possibility in season 10, because it would make sense to bring back some characters from the past. Second, the ninja would have escaped the Realm of the Oni and the Dragon by the end of Season 9. The only way to get there is with an inter-dimensional portal. However, the overlord may be able to travel between dimensions. Third, The Overlord and a few other villains were either banished or destroyed. Samukai "became" a portal. The Overlord was frozen and shattered. Chen was banished into the Cursed Realm. Fourth, this would be a total ripoff of Day of the Departed. In DotD, villains are brought back. In your idea, villains are also brought back.