You were playing Minecraft until You see a black player watching from the forest in the fog, when you turn back for 1 second the dark player is gone, you wonder who was that dark player hiding in the trees in the Fog, you go mining in the cave until you come across the same entity this time hiding behind one of the wall of The Mineshaft, this time you walk to the entity, when you walk to the entity, The Entity simile went invisible as you approach it

Me; what was that figure, oh well