Herobrine

"One side's hero is the other side's villain."

"What?"

- Herobrine and Erebus

Herobrine is an artificially intelligent virus that infects the internet with strange things. He plans to get out of Minecraft and turn machines across the world on their owners.

Trivia

 * Herobrine is an urban legend that people believe to be the ghost of Notch's dead brother that haunts Minecraft. It has not been confirmed whether he exists or not.