bob Kirkland have a unique personality in the show . they always made him looks like arrogant , cold , and a sick person . and red john is 100% a sick person , he draws a smiley face at the wall with his victims blood after he enjoys killing them . bob shook hands with Patrick , and do you remember when Patrick asked him " do I know you ? " he said " no , but I know you " with a creepy look on his face and an evil smile . bob also killed that guy in the hospital and he was afraid that know who he is ...