Ra's al Ghul (Nolanverse)

Leader of the centuries-old League of Shadows, an organization dedicated to keeping order and justice in a world it views corrupt, Ra's Al Ghul was once a mercenary who fell in love with a warlord's daughter. Pregnant with his child, the daughter sacrificed her freedom to save her love, who was exiled while she was sent to the underground prison meant for him. After her death, her young child, Talia, was able to escape and get his help, liberating the prison so as to save her friend and protector Bane. As they grew older, Ra's began to see Bane as too extreme, alongside disapproving of his love for Talia, and excommunicated him from the League. Seeing potential in a young Bruce Wayne, Ra's, going under the name Henri Ducard, took him under his wing and trained him in the ways of the League. However, when Bruce discovers "Henri" intends to destroy Gotham completely rather than just rid it of crime, he goes rogue and sets fire to the League's temple, killing the decoy Ra's Al Ghul, but sparing Henri.

Several weeks into Bruce's adventures as Batman, Ducard would re-emerge and reveal himself as the true Ra's Al Ghul. Allying himself with Scarecrow in a plan to use his fear toxin to destroy the city, Ra's destroys Bruce's home as payback, nearly killing him if not for the intervention of his butler, Alfred. Suiting up as Batman, Bruce confronts Ra's aboard a speeding train containing a device that can vaporize Gotham's water supply, spreading the toxin through the air, and the two do battle. Bruce manages to overpower his mentor, and refuses to kill him, but also points out that he doesn't have to save him. As Jim Gordon uses the Batmobile to derail the train, it falls off the tracks and into a parking garage, and the ensuing explosion kills him.