Disproportionate Retribution: Bitter about being disqualified from an annual stand-up comedy competition, the Joker steals some mind-control implants from the Mad Hatter, kidnaps the three comedians who serve as judges in the annual competition, fits them with the implants and warps them into becoming costumed criminals who attempt reckless capers (with one of the brainwashed judges winding up in the hospital after falling off a bridge) and replaces the judges with his own men just so he can win the trophy. Batman puts it well:
Batman: Only you would ruin three lives for a silly piece of tin. Joker: It's not about the piece of tin! It's about the title!
Condiment King: What's this? Ah, the Big Bad Bat Guy. I knew you'd ketchup to me sooner or later. How I've relished this meeting. You, the Dynamic Dark Knight, versus me, the Conceptual Condiment King! Come Batman, let's see if you can cut the mustard. Batman: (Batman delivers a single punch to CK's stomach) Quiet!
Vaudeville Hook: Joker gets dragged offstage by one of these. He is outraged by the thought of being disqualified from Gotham's annual stand-up comedy competition on the flimsy grounds that he never entered that a year later he seeks Disproportionate Retribution on the judges.