Kaguya is back and she’s up against one of the strongest Naruto villains in existence. Controversially, I would say that Madara is the strongest villain in the series. Now, some may debate this, but I would just point to all of Madara’s feats. Speed, Endurance, Power…Madara has it all. Kaguya is impressive as well, but I just don’t see her holding her own in a fight against him in the end. It would be a solid fight, but Madara would emerge victorious from it. Madara wins.