Yes and no,
Yes to the people that beleive in him, there are also mods and plugins for him! as he is a real minecraft player >.>
No to the people that clearly HATE him so mucn :tongue.gif:
Real answer because this guy is an idiot.
Herobrine is Notch's brother, or at least, it's his brother's online handle. He was a well known gamer in his circuits, so he's known by his name. He died awhile back and Notch most likely added his avatar to the game's code to honor or mourn him. He's been removed as of now, but Notch has been known to lie about tidbits like this.
In game, Herobrine was a normal avatar with white eyes. He'd react like an Enderman, looking at him would fear him and he'd run off, eventually disappearing. Some people claim he would move blocks or add random things, however this is not true. Some also claim killing him yielding "x". Also untrue.
Does anybody think that herobrine is real.Please tell me what you think.
There are mods you can get that add him though, if you wanted him in your game. Also, Herobrine never was in the game. even though Notch removed "Herobrine" in 1.7, it was actually the Human mob, which you could spawn using commands.