6: I love that pairing <3 I once saw a shirt at Hot Topic of Harley Quinn holding a toy gun to Joker and him with his arm wrapped around her shoulder, both smiling evilly to one another (or I think that's how the picture was on the shirt; been many years since I saw it) and then on the bottom it said "Rotten Love". I wanted that shirt so bad and now I can't find it anywhere. Harley Quinn is also my favorite character from all the Batman series.