Valak, or Valac, is an obscure myth in Grand Theft Auto IV, inspired by a demonic figure from the horror movie The Conjuring 2.
Description[]
Valac is an ancient demon that is believed to lead thirty legions of demons. Valac is found in goetic grimoires as an angelically winged boy riding a two-headed dragon, attributed with the power of finding treasures, however, the demon is portrayed as a nun in Conjuring 2, influenced from unknown sources. Players hold the belief that Valac tends to follow the protagonist Niko Bellic, whenever the player strides into darker regions of the map, leading Valac to appear right before him but Valac was unknown to a bulk amount of players prior to The Conjuring 2, which was itself released years after the game, hence makes the concept less authentic and more of an unspecified false belief in the game.