William "Will" Simpson is a Northern Irish comics artist and film and television storyboard and concept artist. Born in Prehen, County Londonderry, he began his career in British comics in the 1980s, drawing "Big Ben" for Warrior magazine in 1984, Transformers for Marvel UK, work for 2000 AD, including "Judge Dredd" and "Rogue Trooper", in 1987-91, and "Sex Warrior" for Toxic! in 1991. This led to work in American comics in the 1990s, including Hellblazer and Vamps and Batman: Legends of the Dark Knight for DC Comics. In the 2000s he moved into film and television, providing storyboards and concept art for films like 24 Hours in London (2000), Reign of Fire (2002), Breakfast on Pluto (2005) and City of Ember (2008). From 2011 until 2019 he was a storyboard and concept artist for the HBO TV series Game of Thrones, for which he designed the White Walkers as well as all the show's weapons. A book of his storyboards for the series was published in 2019 by Insight Editions. Source: Wikipedia (en)