Originally Posted by
The Kid
Also, when Batman 'dies' in Morrison's run, Joker takes the identity of Oberon Sexton and when he gets pissed at the Black Glove, he starts systematically killing their members. No theatricality, no clowning around. Just straight up strategic murder. More evidence towards him playing up the clown for Batman. Without him there, he's just a regular (although extremely competent) criminal
That said, the whole 'Oberon Sexton' thing was also Joker playing a gag so who knows. Regardless, he has a pretty clearly twisted sense of humor