Board Thread:General Discussion/@comment-26006155-20181123023529/@comment-26006155-20181207191505

Also, if Asgore absorbed the Six Human Souls in the genocide route, like his friends expressly warned him to do, something he didn't do on the Neutral and True Pacifist routes, his max HP would be great increased. So yes, he might very well have 9,999,999,999+ hit points. But only on the genocide path.