Dinah smiled and leaned against the desk opposite Jennifer's.
"As I said, back home we used to do our best to cooperate with the police force. Batman had a contact with Gotham's PD. There are a lot of weird things out there. Especially here. We've got a lot of experience handling the weird. So, if you ever come across something that you need a little extra help with, we're just a button push away."
She pushed off the desk and reached into her bag, retrieving a few file folders. She held them out to Jennifer.
"I know you already have a file on the Joker, so you probably have information on these as well. But just in case, there are a few metahuman criminals in the City that caused a lot of trouble back home. This is all the information we have on them."