Red John is a fictional character and the overarching antagonist of the crime drama series The Mentalist (2008-2015). He is a serial killer who always leaves a smiley face drawing at his crime scenes, normally drawn in the victim’s blood.
There are roughly one-sh*t billion tropes so PLEASE look through them before adding one. Otherwise add what you like. ADDITION: PLEASE read through the trope description provided before submitting something. It's not a huge deal but too often people submit characters that don't fit just because they misinterpreted the title...
