Pop Chart Lab has a great poster for sale that tries to categorize Batman’s numerous foes. Here’s a small section:
Check out a zoomable picture of the whole thing or buy the poster at Pop Chart Lab.
Call me blind but has anyone actually found the Joker in this? Or is that the joke?
It took me a moment but he’s branched from “Deck Of Cards” which is branched off “Inanimate Objects”