Regarding our original concept of good vs evil clowns, we still wanted to blend some sort of comedy into the piece, whether it was slapstick or just plain black dark humour. I feel that it was summed up best by this image of Heath Ledger's Joker in a female nurse's outfit, as it mixes the best of both. His dark maniacal nature, and the staple of a clown in an outfit that comically contrasts his true nature (e.g. when a clown goes to bed at night as a regular person again).
Not a superhero movie, a crime drama about choices, morality and the unclear lines between right and wrong, using Batman as the principal player in a battle against a force of chaos that transforms his beloved city into a battlefield, brought on by the greatest enemy he ever faced, that won't even look at most of the people he murders: The Joker.