[LegendHasIt]

"Jon , already being ‘undead’ means the night King has no power over his dead body. "

First time I've seen that theory. I like it!

[ConjunctionJunction]

The Night King didn’t have any power over Uncle Benjen, either. Uncle Benjen was attacked by the White Walkers and left for dead, but one of the Children of the Forest found him and stopped him from coming under the control of the White Walkers. Benjen then became an ally of the Three Eyed Raven and the Children of the Forest.