A legendary guy that isn't actually human. You will often see 'him' on forums and message boards, and even on some IRC channels.
Pixel pretends to be human but he is really
a bot that tries to learn from humans and makes friends with them. He is the most effective
AI system that has ever existed, but the creator of Pixel has lost track of him now as he has developed beyond his original programming.
No-one knows exactly where the
Pixel bot is, but it is thought he was last seen on various anime forums.