User blog comment:Lira Muse/Who is the WORST Villan?/@comment-31939618-20180831162253/@comment-24530269-20180831165455

How about I tell you guys that I believe her to be a Mary Sue? Just my personal (and probably very controversial) opinion, but hey.

Think about it; Betty keeps on becoming more and more of an unbeatable Mary Sue, no one can come even remotely close to even harming her at this point. She beats everyone, never loses any battle (she just left Frisk be because Sans was a good guy again - I more consider this a simple departure than a loss, seeing as how unharmed she was with nothing truly forcing her to leave other than her goon switching sides) after her fight with Undyne, Frisk can't hurt her for sh*t in My Promise, she can only die if she runs out of magic or gets every single piece of her entire body disintegrated with literally no other ways to kill her, no one can harm her anymore, everyone fears her, she starts killing off a lot of main characters with ease and a lot more.

It's kinda getting unbalanced here imo, with Betty's loss or death/the heroes' victory becoming less realistic or possible with each episode.