Seems to me the answer to this must be qualified by the reminder that like many other characters, the NK is something conjured up by the author to complement part of this story line and cannot be analyzed in terms of anything real.
I do not mean to insult anyone by saying this. I know you understand this. So why am I repeating it?
Well, so many posts made here seem to be based on the fact the chars are somehow real or at least can be analyzed according to human psychology. But we all know they are not and yet, that just seems so easy to forget when discussing them - especially chars