Board Thread:Questions and Answers/@comment-34921698-20190301142122/@comment-34368001-20191224120907

I agree. San's fight seems very scripted.

I'm actually glad MN doesn't have a boss in the genocide route. It would kinda oversaturate the genocide route first of all. Second, the entire point of the genocide route is that it's supposed to make you feel empty. It's not supposed to be full of super harder fun bosses. And MN having a boss fight would really take away from the uniqueness of Undyne and Sans, with the point of their fights being for when the story gets really serious. If we had Undyne, then Mettaton immediately after, then Sans immediately after that, the story telling of the genocide route would also be very repepetive.

MN is unique though. Since most of the bosses you just one-shot, which you should be used to, and then you just fought Undyne so when you see Mettaton's intimidating transformation you think it's gonna be another big fight like UTU, but sure enough, he gets one-shotted just like Toriel and Papyrus. So it makes Mettaton unique in that sense.