"What Bane provides is this incredibly frightening physicality," Nolan said. "He is a militaristic presence. He's a monster."
Bane exudes a different kind of evil than previous villains, Nolan said, but the character stays true to his attempt to make the audience have that "unsettled" feeling that the villain could be real.
"We didn't want to do any kind of watered-down version of what Heath has done as The Joker, which was such a seminal thing," he said. "I really wanted to do something completely different and something primarily physical."
But now that he has wrapped his Batman opus, Nolan said he doesn't have anything else in the works yet.
"I really have no idea what I am going to do after this, and I kind of enjoy it," the filmmaker said, laughing. "I'll get bored eventually and figure out what I want to do next because I do love making films, but for me it's always been about a story -- a story that hooks you."