I could not decide so , joker, catwoman,The riddler, and finally Mr. Freeze. Mr. freeze is a cool character (no pun intended) I always felt bad for Mr. freeze. I liked how batman tried to help save Nora freezes' life.
I don't know Knightfall. I will take a look, thank you. I am always interested by new comics to read. My older sister watched old Batman serie and I remember Bane (i didn't know it was him until I watch movie) using fluid to make is muscles grow bigger. It literally traumatized me lol. And I didn't know it was Bane in this Batman movie until the third watch. These two are only representations I know about him...
Killer Croc!! He's so adorable and awesome at the same time xD I haven't encountered a version of him that I didn't like
Hm, but really, I practically like all the villains in Batman TAS... I really like Scarface and Baby Doll, to mention names that weren't in the list yet And outside BTAS, the Hush and Court of Owls story arcs were pretty cool too xD If Batman Beyond counts too, then I'd also add Inque to the list xD