User blog comment:Chaos11394/Where Do the Demons Go?/@comment-101.162.163.153-20140111061414/@comment-25291610-20140628075553

They aren't COMPLETELY mutated, they are just corrupted souls...bobby described them as spirits with an ego...they are still souls, just corrupted. There souks aren't worth anything in deals anymore, since they aren't pure, but they are still souls, and can't be destroyed. When death said a soul can be tormented and injured, but never destroyed, he meant that they couldn't be destroyed, even after the torment (becoming a demon)