When you wander underground in search of minerals, there is a very small chance that you will find a redstone torch. That is a sign that he is here. He is known as Herobrine, he is hidden. In the darkness of deep caves or dark oak forests, he is always stalking you from behind and waiting for the right moment to finish you off quickly. If you notice a red stone torch or a pair of white eyes glow in the cave then your world is definitely not safe to play in anymore (this is just one of minecraft's creepypastas and it's not real so you don't have to worry about herobrine in your world *unless you use mods* so just survive at your leisure.) Thanks for reading