Night King is without a shadow of a doubt, one of the most menacing characters to appear on any show. His death, though botched by bad writing that was ever present on the last season of the Game of Thrones, was still iconic for the rise of Arya as a genuine hero.
'Night King' only appeared on 10 episodes throughout the 73 episodes run and when you think of it, he didn't utter a single word of dialogue throughout the series. The presence of a villain so scary and menacing without even uttering a single word, just by his presence, he put the fear of God on anyone who laid eyes on him.
Night King emerges from the dragon fire unscathed.SOURCE: The Verge
Vladimir Furdik, the actor behind the makeup, played the 'Night King' to perfection. The stuntman was rewarded for his work in the early seasons of Game of Thrones but he wasn't the first person to don the spiked hair makeup. Richard Brake portrayed the character during the fourth and fifth season and he was later replaced by Vladimir Furdik at the start of season 6, mostly because of scheduling conflicts.
The switch of Night King actor from season 5 to season 6.SOURCE: Daily Express
The stuntman has gone on to become famous through his stoic but menacing presence as the 'Night King'.
Before the release of the final season of 'Game of Thrones', there were talks, HBO was looking into making three prequels based on 'GOT'. One of the said prequels will be based on the 'Long Night'.
The 'Long Night' refers to the time in 'Game of Thrones' history when winter lasted for a generation, during the 'Age of Heroes'. During the long night white walkers came down from the north and people were driven inwards, toward the south, the humans finally banded together with the children of the forest and the first of the night's watch to defeat the night king during the Battle of the Dawn. 'Bran the Builder', an ancestor of 'Starks', used magic to build the Wall and the wights went back north to the place where there is eternal cold and stayed there, gradually they just became fairy tales.
The magical wall created by Bran the Builder.SOURCE: PopOptiq
Since the long night is about a night that lasted for a generation, it is safe to assume 'Night King' will have a prominent role in the series. They already have an actor who has portrayed the role, but will they keep sticking with him?
If it ain't broke, don't fix it, why break a good thing? Vladimir can stay in makeup as evidenced by the statement made by Kit Harrington about how he looks at Vladimir in makeup when he feels angry about his costume, for inspiration. The man can stay in costume for 4 hours just to shoot a 2-minute scene, he even sleeps in the costume. This was his first credited onscreen performance and you know he is going to give his hundred percent.
The reprisal of the role also depends on what the creators of the new show need. Since the show is set in the night time, and if 'Night King' were to appear for a long period of time on the screen then he probably needs to have a dialogue here and there. Vladimir is a stuntman, he can fight and fall and jump and make the lead actors look good but we haven't seen his dialogue delivery capability. The 'Night King' needs to be menacing and his voice in real life doesn't sound that menacing.
Watch: The transformation of Vladimir into Night King
We would love to see Vladimir reprise his role as the 'Night King', just so he can redeem himself after the creators of 'Game of Thrones' did his character such injustice on his final appearance. It doesn't depend on us though, we as fans can only do so much. It will all depend on the creative direction the new showrunners for the prequels decide to take the character.