She is hands, paws, and fins down the best character in all of Undertale for me. I love her and her determination, her unrelenting spirit, so powerful, to give it her all to protect everyone. To defeat the evil. I heard her theme and immediately said "Not even the true final boss is this amazing."
Undertale is an amazing game, go buy it now. Spoiler warning.







I know about the genocide ending...
I was going to set everything back, but someone thought they could outdo me.
Now I go again to fight the TRUE antagonist of Undertale.
...heh, humanity? No. The antagonist hates EVERYTHING and only wants power and destruction!
The True Pacifist ending is a lie.
Out of everyone in the game, only 1 needs to die, and stay dead forever...
Their intentions are unforgivable.
What, I'm the monster? I was going to reset everything and never do genocide again, not destroy the world...
...now it's going to be the Homocide run, where I fight everyone until I level up enough to...
Kill the true antagonist. The furst human. By taking all the creature souls I defeat. Using them for Good. Especially Undyne's.