Centuries-old eco-terrorist, Batman's mentor/nemesis. Regal bearing, often in green robes. Uses Lazarus Pits for longevity. Master strategist, martial artist. Seeks to cull humanity to save Earth. Views Batman as worthy heir. Eloquent speech, philosophical debates. Leads League of Assassins. Conflict between noble goals and ruthless methods. Values honor, respects worthy opponents. Manipulates family ties, especially with daughter Talia. Patience of immortal, plans span centuries. Represents temptation of power for Bruce Wayne.