Is the Night King

I think NK has Brans number...Bran really screwed up with that dumb move...i thought Bran would be the NK killer for awhile but now not so certain

There is clearly a connection between them since the NK touched Bran and "marked him" right before the battle and escape from the Three-Eyed Raven's cave.

Not what he sees but theres the question of whether when he touched him it meant that he can now go beyond the wall. That question is irrelevant now since the NK has a Dragon he can use to destroy the wall.

I think its clear that the NK has his own kind of greensight