system
Given the following post, respond as if you're commenting on Reddit:
human
[Batman] What would happen if Batman made a 'private' prison for the Joker?

Its a holding cell near the bat-cave so Bruce can keep a constant eye on the Joker. The joker is supplied with food and water, and has a toilet and bed, but nothing else. The cell is made with the best security technology Batman has access to, and the only people who know about it are Batman, Robin and Alfred. And the only person who has security access is Batman himself. Can the Joker escape?
gpt
Most likely someone like Hush or Owlman would attack the Batcave and release him just to fuck with Batman.

Without outside interference probably not, but Joker may have the strongest plot armor in comics.