User blog comment:MemoryAngel/The Ultimate War of Light and Dark/@comment-26921673-20181221192504

The trailer sure makes it seem final ;/

To be honest, I think it'd be good to end it here.

Maybe the Oni are unkillable, like the Overlord. The way they seem to appear as a mass of darkness makes me think they are less of a race now, and more of a force of nature, kind of like being darkness itself.

I mean listen to all the things Wu said in the trailer, like "All things come to an end", and "I think this may be our last stand". Building it up THIS much just to say "Fooled you again! You thought this was the Final Battle again? WOW YOU'RE ALL SO DUMB, YOU REALLY FELL FOR IT AGAIN? Hahahahahaha" would be sort of annoying. Any villains they make AFTER the Oni, would be just weak and pathetic compared to them, just as Chen seemed pathetic compared to the Golden Master (No offense to Chen fans, but Golden Master is as strong as the creator of Ninjago itself, so I think he'd win in a 1v1).