Kaguya was the final antagonist to appear in Naruto and man, she was just awful. There was no build up to her existence, she came out of nowhere and hijacked the plot to make things even more confusing and dragged it out. Not to mention that she has like no personality and no personal connection to any of the heroes, making her feel more like an obstacle to overcome than an actual villain. I disliked her when she first appeared and still dislike her now