Popsugar Entertainment Harry Potter Harry Potter and Game of Thrones Crossovers 8 Harry Potter/Game of Thrones Crossovers That Might Blow Your Mind a Little October 12, 2017 by Shannon Vestal Robson View On One Page Photo 14 of 17 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 14 Julian Glover as Aragog Yes, Harry Potter's scary giant spider Aragog is voiced by the Game of Thrones veteran. Previous Next Start Slideshow Harry PotterGame Of ThronesTVMovies