Mark Hamil has it easy man. He's a great voice actor, but he only has to worry about the voice. All the other actors had to worry about how they present themselves in every aspect, not just with how they speak.

None of them, every single one needed to do something better or was just not right

Jack Nicholson, 'cause i gotta admit, he got a sweet mafioso style

Heath Ledger. No comparison. Literally the performance was modern and showed Joker for what he really is. He is the ONLY Joker in my books.

This goes out to TheJoker9215, you're an idiot. Don't state they needed to do something right WITHOUT stating what it was they needed to do. Heath Ledger, best performance of a comic book character, ever. Plain and simple. His Joker was perfect.

All of them

Jack Nicholson and it’s not even close and it’s also the best Batman movie aswell

I am obsessed with Leto’s joker, but I have to go with Ledger because not only is his Joker iconic af, but it was almost as if I can physically feel and smell his crazy. Ledger did such an amazing job with Joker and I feel like Leto, for me, is a close second. I feel like Leto’s Joker would have been a close second for everyone if the screenwriters and the directors did a better job on him tbh.

Jack Nicholson because he brought life to a good character

Ledger was the best Monaghan is definitely a close 2nd