Who is herobrine?

MYTH:

Herobrine is a myth around the Minecraft area. Supposedly, Herobrine is Notch's(the creator) dead brother. Notch has even said he has a brother, to make it scarier. The myth goes on, saying Herobrine sends you a private message asking if you want to play with him. While you aren't with him on Minecraft, he digs 2x2 tunnels in pyramids, and sets forests on fire. When you come back to see this, Herobrine will be watching you where you can't see him. That's all I know about the myth. You have nothing to worry about, or do you? On a side note, his eyes are pure ghostly white.

REALITY:

Herobrine isn't really in Minecraft and Notch has confirmed he has no dead brother.