GUYS I SAW HEROBRINE IT WAS REALLY HIM AND I HAVE 2 SCREENIES!
(http://www.opticraft.net/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FRDxgL.png&hash=72634a07595afafced457e06d78d8395)
(http://www.opticraft.net/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FZl5T7.jpg&hash=1b59557d854fe03d4a2c679b21955ec0)
Oops not this one
(http://www.opticraft.net/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FV7Ejq.png&hash=61c91bb79d45cc92bce1a2d4c0a14623)
I THINK MAYBE HE WAS ADDED IN FOR HALLOWEEN! :O
(Names removed for some stupid reason. :-\
Look at the 1.3.1 update.
(http://www.opticraft.net/proxy.php?request=http%3A%2F%2Fi1149.photobucket.com%2Falbums%2Fo598%2F15JMorriso%2FScreenShot2012-10-29at31725PM.png&hash=9268d22e652d67909706d615ca0979a6)
I copied that straight off of the minecraft start page and removed the additions to make it easier to screen shot but their at the bottom. THe very last thing read it and weep.
(http://www.opticraft.net/proxy.php?request=http%3A%2F%2Fi1149.photobucket.com%2Falbums%2Fo598%2F15JMorriso%2FScreenShot2012-10-29at42855PM.png&hash=57c85c1d770d4662cfb3b6a17aa7cc51)
To me this looks like a steve skin crouching to prevent the showing of name above head and distance affect adds to the illusion.
Xeadin I know I just want to try an prove that it doesn't actually exist and I'm done after this post.
If you go read some actual mojang threads they say Herobrine was started by some minecraft fans. That he has never actually existed (as a mojang build) and if you search your bin for the .png for it it isn't there. This is a hoax.
Actually, he does exist. I saw him just at spawn.
(http://www.opticraft.net/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FeuhlU.png&hash=a03fd36fbde97d54e3335a7a3c1802c4)