Bane

The Dark Knight Rises
In The Dark Knight Rises, the main villain for most of the film is Bane. He is very large and powerful and leads a group of other militants to take over Gotham. He confiscates military technologies from Wayne Enterprises to keep watch on the city and make sure that no person goes out of line.

Ra's al Ghul and the League of Shadows
After becoming a member of the League of Shadows for helping save the leader's daughter, Bane is eventually excommunicated for being "too extreme." This is worrisome as if he was too extreme for Ra's al Ghul, he could pose as an even bigger threat than Ra's.

Talia al Ghul
Bane and Talia are lovers, as they both carry a shared trauma from their time in the Pit.

Battles with Batman
In their initial battle, Bane beats Batman, ending the fight by dropping Batman's spine onto his knee. In this battle, Batman is revealed to be Bruce Wayne as his mask is broken. Bane sends Bruce to the Pit after breaking his body and spirit.

Bane later loses to Batman once Batman realizes he can attack Bane's mask to cause large amounts of pain. Bane is eventually rescued by Talia after losing in this fight to Batman.