<P> The White Walkers portrayed on HBO's Game of Thrones differ slightly in appearance from their literary counterparts, but Aaron Souppouris of The Verge named them among "the most visually iconic creatures on the show". In the TV series, the primary White Walker has been portrayed by Ross Mullan . Their apparent leader is the Night King, portrayed by Richard Brake and Vladimir Furdik, who first appeared in the episode "Oathkeeper". In "Hardhome", the effectiveness of Valyrian steel against the White Walkers is proven as Jon shatters one to pieces with a single stroke of his ancient sword Longclaw . Unlike in the novels, the TV series has established that wights can be destroyed by dragonglass . </P> <P> In the season 6 episode "The Door" (May 2016), Bran Stark experiences a vision of the creation of the Night King by Leaf, one of the Children of the Forest, by stabbing a human prisoner in the chest with a dragonglass dagger . Leaf explains to an incredulous Bran that the Children were at war with the First Men . </P> <P> In 2012, Funko released a White Walker figure as part of their POP! Television line, which are 4.5 inch vinyl figures in the Japanese super deformed style . The company later produced a Mystery Mini Blind Box figurine of a stylized White Walker . Dark Horse released a 9 - inch White Walker bust statue in 2013, and later a 9 - inch full figure statue . In 2014, Funko released a 6.5 inch articulated White Walker action figure (with spear accessory) as part of their HBO - licensed Legacy Collection line, which features "some of the series' most popular characters". Dark Horse produced a Night King bust in March 2016, which was followed by an 8 - inch Night King figure by Dark Horse Deluxe in late 2016 . Funko also released a "Night King" POP! figure that same year . </P>

Game of thrones the white walkers are vulnerable to which of these materials