I mean I'm not a comic book nerd at all; never even read a single Batman comic. I don't think I've seen any Batman movies outside of the Nolan films and some PG animated film I saw when I was 8 or something (Mr. Freeze was in it).
Still I know who Dick Grayson is ffs. Didn't know it was that esoteric. (For example I have no idea who Killer Croc is)