Removing Account Unknown

I’ve been toying around with Profile removal scripts and functions for a while now but, I have hit a brick wall with removing the “Account Unknown” ‘s from Advanced System Settings.

I’ve found that if all files aren’t removed from C:Users, all registry hives, and Advanced User Profile settings, then the Account Unknown thing happens.

Has anyone automated a way to eliminate all Account Unknown’s from a machine/server?

Also, I am unable to use DelProf or DelProf2 in my environment.