While hallucinating, Batman makes a passing reference to Jason Todd, the second Robin. Batman raves "Robin... look out... Joker's got a bomb!", which in the comics is how Jason died. See more
It's time we had another chat, Batman. Now, tell me about this supposed gas again.
I've already told you. When the gas is put into Gotham's water supply, the entire city will be affected.
Why won't you believe me?
Well, how could such a complex plan be implemented without attracting attention? I think this plot is just another delusion. And deep down, you believe so too. Otherwise, why come to Arkham? The one place where costumed delusional personalities can receive ...