Ra's al Ghul

Ra's (pronounced "Raysh") al Ghul (Arabic for "The Demon's Head") (voiced by David Warner and Oded Fehr) was an eco-terrorist who has lived for over 600 years through the use of Lazarus Pits.

Over his long lifetime, Ra's became a master planner, an expert fighter, independently wealthy and the leader of a powerful criminal organization, making him one of Batman's most dangerous foes.