system
Given the following post, respond as if you're commenting on Reddit:
human
[The Batman] Aside from who we’re introduced to in the film, is there any hints at what Batman was doing before the plot of the movie?

We know this movie takes place roughly 2 years after Bruce Wayne becomes Batman.  I tried doing a quick Google  and Reddit search but couldn’t really find the answer I was looking for. Has Bruce mostly been fighting small time crime and The Riddler is his first big bad?
gpt
He meets up with the Joker in Arkham during his time looking for the Riddler to go get his input on how to find this guy. So we know he at least went up against the joker (or who he was before he became the joker).