Herobrine is a made up CreepyPasta which was admitted to be un-true.

And:
-There is no code or texture for him
-Notch and other Mojang members have said he does not exist.
-The "Removed Herobrine" updates were jokes, they never added Herobrine in-game or removed him for real.
-This game is rated E or E 10+, I doubt they would add a mob that would scare you like how Herobrine would .__.
-There's more proof he's fake then that he exists, most proof you find is posted by a person with mods.They may show their .jar is clean, but they can easily force update then re-install a mod.

Some more information on the MinecraftWiki page (Read it all.):
http://www.minecraftwiki.net/wiki/Herobrine

I was the first one to invent herobrine

i was on a server that was 24.107.116.192 and Herobrine was a moving talking character with the nickname Herobrine. Is it real?? Because the admins say he IS Herobrine!

i think i know the answer to ur question. so here it gos like this:1day a guy was trying to get all mods but insted he had created an ultimate killing machine 1 day a guy spotted herobrine he posted sighting on minecraft it got deleted so he got a messge from user:herobrine he tryed to check his page but it was 404ed so thats ur answer.

Herobrine is not real, to start with! There is no evidence that he is in the code. The Mojang team is only trolling us when they say: - Removed Herobrine. The first image ever to find was made via photoshop.

Notch picked up the Herobrine images, so he came up with this: Herobrine was supposed to be Notch's older brother who died, yet somehow made a Minecraft account. Confirmed long ago, Notch never had a brother.

Full story: http://knowyourmeme.com/memes/herobrine

http://knowyourmeme.com/memes/herobrine

I managed to find something about the first post of herobrine, the creepypasta, don't worry its text not a video, well Haunted Gaming on youtube is videos (duh) but as a review.

Well I guess he came from the Slender man just like the Enderman and the name probably came from notches fake "dead" brother which there never was and some douche might of just started a rumour back in the day then made a mod about it then it started to catch on.This is just my opinion so don't believe me I may be wrong.

Well i think it was photoshoped and then notch made him real

I have actually seen Herobrine, my is some people think hes scary but i think hes just annoying and opinions overhyped.

herobrine is actually a short horror story, also known as a creepypasta, I guess it was the person who made the creepypasta would be the guy who made him up, maybe search for the creepypasta, well an easy way to find it, search on youtube:
Haunted Gaming - Herobrine (minecraft)
there should be a link to the full detailed creepypasta in the description, check it out.

Me >:D