Ra's al Ghul (Earth-8150)

"I know the rage that drives you. That impossible anger strangling the grief, until the memory of your loved one is just... poison in your veins. And one day, you catch yourself wishing the person you loved had never existed, so you would be spared your pain."

- - Ra's al Ghul to Batman

Ra's al Ghul (Arabic for Head of the Demon) was the leader of the League of Shadows. Inheriting the title from the previous Ra's al Ghul, he discovered the secret of immortality through the rejuvenating waters of the Lazarus Pit, which allowed him to lead the League for 400 years, a quest in which, among numerous objectives, he sought to destroy Gotham City and rebuild it through Wonder City. He is the father of the late Elektra Natchios and Nyssa Raatko. Training Bruce Wayne into becoming the ultimate warrior, Ra's al Ghul almost succeed into turning Wayne his permanent disciple, until he rejected the possibility of killing a criminal, eventually escaping from the Shadow Temple and returning to Gotham. Ra's then plotted alongside Scarecrow to release Fear Toxin in the city to reduce it to ash, until he was stopped by Batman, none other than Bruce himself.