Marge the Ventriloquist is playing the ventriloquism with Maggie the Scarface. Homer the Joker is juggling and eating Donuts!^^ And Bart the Riddler is holding up Lisa the Mad hatter who is taking a balance.
"Jee. That looks like frightening villains. One is a puppet, one is a puppeteer, one is on a doughnut unicycle and one have the last one on his head, the last one who have no pants (credibility go bye bye)..."
Just kidding, the Joker and Harley are ridiculous too, that don't make them less dangerous or idiot. I like these kind of bad guys in fact.