You'll make your Joker a proud Mistah J when you pick up the Harley Quinn Inflatable Mallet. Harley Quinn is one of DC's more playful femme fatales who's best known for being the Joker's partner in crime. This prop is a big blow-up mallet with a square handle and a hilariously oversized cylindrical head. It's features black and red stripes, with red and black harlequin diamonds on the two flat faces.