For those who don’t remember or may not be up on their Batman lore, Peña Duro is the prison Bane was born in.
Gotham’s Episode 8 title is a pretty blatant reveal.
While exactly how the show decides to introduce the super-strength supervillain may still be a mystery, it seems clear that Bane will be making an appearance in Season 5.
The experience would harden and sharpen the skills of the villain to a level similar to that of Batman, making him one of the most dangerous adversaries the hero’s ever faced.