OMG LOVE this movie!!
Anyways, here's my thoughts...
Joker... gotta be some kind of SF, and quite anarchic.....it might be kinda vain, but I'm thinking SEI Do I look like a man with a plan to you? kekeke.
Batman.... Gamma/Beta NT? ENTj? Or summin
Two face.... Beta Extrovert??
Rachael...ermmm.... ENFp?? ENFj? Iono?
Holy balls was this an awesome movie!!!