Board Thread:General Discussion/@comment-31981697-20190119125630/@comment-39394247-20190526170945

Also, I think that Chara knowing something about Toriel and Asgore allows her to report their stats accurately, while she exaggerates Undyne the Undying's stats as part of a plan to get Frisk to reset.

Also, the 23000 value is already seen in the wiki. If Mettaton Neo actually had 30000 HP and proper defenses, it would take ~70 perfect hits with the empty gun to reduce his HP to 0.