Board Thread:General Discussion/@comment-32182236-20190716003715/@comment-32182236-20190925185137

I recall a theory I made for that yellow name.

The monsters are the ones with the yellow names, as the Froggit makes clear. And another Froggit makes it clear that sparing someone means saying that you don't want to fight.

That's why sparing Toriel over and over is the way to eventually get her to spare you.

Sans is telling us that he doesn't want to fight, so he's sparing us, at least to make the name turn yellow. But he's not technically ending the fight, so we remain stuck in it.

Actually, is it possible to get a yellow name to turn back to white?