Answer
Ra's al Ghul, the enigmatic leader of the League of Assassins, was co-created by Neal Adams for DC Comics. Adams' collaboration with writer Dennis O'Neil introduced Ra's as a formidable adversary for Batman, known for his cunning, martial prowess, and unwavering devotion to his mission. Ra's' complex motivations and intricate relationship with Batman have made him a compelling and enduring character in the DC universe.