Minecraft wiki entry for Herobrine, associated text: Herobrine is not in unmodded Minecraft, and never has been. There are no references to him at all in the source code, and there is no code to allow for any entity to act like Herobrine. It is not possible for Herobrine to have ever existed in any unmodded clients or servers. Any appearances of Herobrine are caused by either mods being installed or because of another player using the skin.