Board Thread:General Discussion/@comment-26006155-20160613103837/@comment-27089028-20160613220301

From Blackfoot maybe. I'm simply stating that Flowey/Asriel still has his soul but due to having Chara's soul as well can't feel compassion. After Frisk falls, Chara moves to the more compatible host stripping Flowey of his reset power and blind malice which begins to dissolve throughout the game until he breaks down in the Pacifist ending.

The reason Asriel keeps making Flowey out to be nothing more than a soulless thing that'll take his place is sheer shame in knowing there is only one culprit for Flowey's atrocities; HIM.