uh, the JOKER. there are other big criminals like Penguin, Killer Croc, Red Hood, Scarecrow, Poisn Ivy, Harley Quinn, Ras Al Ghul etc, but the Joker is the main criminal for Batman. And... Ras Al Ghul is a big one too.
bane
Yes he is
joker by for
two-face and the riddler
Ra's Al Ghul and The Scarecrow
Mad Hatter was definitely Batman's villain
A racoon's main enemy would be a wolf.
That is the easiest question I've ever heard in my life , haha . . THE JOKER is Batman's enemy who has the green hair . . Green hair , purple custom-made suit , and all the insanity that somes along with it . :) Hahahahahahaaahaahahaaa !
The Covenant are the main enemy of the Halo Franchise.
Germany was Britain's main enemy.
The main enemy of the Greeks is Persia.
Russia was the US's main enemy after WW2