30 years in the slammer, 10 here in Arkham?!
So, a guy who was talking to the Penguin at the beginning says that he has been locked-up for 40 years. So, even if he was very young when committing crime that terrible he would be, what, mid fifties now. Yet, he's drawn like he's in his thirties. I know it's not very relevant to the rest of the story, I just found it interesting enough to point it out.