Willem Dafoe
The greatest sin in cinema history is that Willem Dafoe hasn’t been able to portray the Joker. From the fan artwork to the countless blogs stating why it’s a total no-brainer, there’s an army of people begging for this to happen, but Warner hasn’t pulled the trigger. Instead, they went and cast Dafoe as Nuidis Vulko in Justice League and gave us Juggalo Joker.
You need only see Dafoe’s performance as Norman Osborn/Green Goblin to understand why he’s the logical choice to don the purple suit and lipstick smile. No other actor can convey as much simultaneous menace and delight as Dafoe can, while still delivering a scintillating performance. Also, he’s probably the only person in the world who could get anywhere close to pulling off Mark Hamill’s version of the character in the animated series.
This one hurts because it was probably the last chance for Dafoe to become the Clown Prince of Crime. He’s already over sixty, so it’s unlikely that he’d even want the role if it came his way. Alas, sometimes, the world just isn’t fair.