Choose your favorite of these and discuss I like mad hatter Here's some others: Zsasz Riddler Killer croc Manbat Mad hatter Harley Quinn Poison ivy Catwoman Solomon Grundy Clay face Killer moth Ra's al ghul hush Lady shiva Firefly Electrocutioner Red hood Lenny Mr. Freeze Black mask Calendar man scarface Copperhead Talia al ghul Hugo strange Arkham Knight Amygdala Film freak Maxy Zeus The eraser Anarchy Kite man Professor pyg Edit: hmm, not much love for penguin Edit: this is trending! Edit: people saying deathstroke not batman villian, he will be removed