Red john is janes stepbrother. after he left his father his father had another child in the hope it would be like jane but after years of being compared to his brother he also left . The smilie face is his clown makeup from the carnival where he and Jane worked but while Jane was a headline he was the clown . That's why he knows about janes past and is obsessed by him . Then years later he is publicly ridiculed by Jane the brother he was always told he wasn't as good as . He then kills janes family and starts a game with him. He has cosmetic surgery to change his appearance which is from the episode where bob asked a known red john accomplice if he recognises him then is relieved and kills him .
