While Nolan famously put his own spin on the Batman mythos, and often outright changed major elements of it, he also borrowed quite a bit from the comic book lore, including Bane's mask which has ...

It's revealed in "The Dark Knight Rises" that the mask Bane wears actually keeps severe pain under control for the supervillain. The famous quote, "No one cared who I was until I put on the mask ...