Joker/YMMV

"Joker: (after Batman arrives)
 * Complete Monster: Joker, probably more so than any other incarnation (yes, even The Dark Knight). He barely has a sense of humor and mostly his motivation can be summed up as "hate and sadism", and his humor is more black and angry than mirthful.
 * Crowning Moment of Awesome: Talk about Crazy Prepared.
 * Oh, and Harley Quinn's part in the same scene -.
 * Batman, with only three words, shows that he can torment the Joker just as much as the Joker torments him.

Batman:"


 * "There's no cure for you. No cure. Just a Batman."
 * Older Than You Think: Most people would assume that Jokers appearance in this story is inspired by the Heath Ledger Joker in The Dark Knight, but this Joker was actually designed long before the first images of Ledger in makeup went public. The similarities are a complete coincidence.
 * Squick: A lot of the scenes involving the Joker, in particular some of his more gruesome murders, but a genuinely creepy example is of him doing something as seemingly innocuous as eating shrimp in a thoroughly revolting manner.