Board Thread:General Discussion/@comment-26980570-20160320192450/@comment-28026157-20160321221037

I think your theory has some merit. Their origins are a mystery, even to the other Snowedin villagers. On that note, I wonder if Alphys wasn't the first to experiment with determination. Maybe Sans and Papyrus were skeletons of fallen humans, animated by W. D. Gaster using determination, much in the same way Flowey was animated by Alphys.