system
Given the following post, respond as if you're commenting on Reddit:
human
[Hannibal/Batman] What if Hannibal worked at Arkham Asylum?

How would he react to being the psychiatrist of various elements of the Rogue's Gallery?

For example, the Joker.

Let's say it's the TV series version of Hannibal.
gpt
Binging the show now.

Joker would try to get inside Hannibal's mind, and by observation realize how crazy Lecter was.  There's one comic where Joker breaks a light bulb in his cell and uses the ground glass to poison a guard/orderly.  When he did something like that and Lecter's mask slipped mr. J would know what he was dealing with.

Hannibal would be egotistical enough to think he could 'cure' the joker, but Joker would turn the tables.