Ra's al Ghul is the leader of the League of Shadows, an organisation that destroys civilisations when they have reached the height of their decadence.
First decoy
Played by Ken Watanabe.
Second decoy
Played by Jay Buozzi.
Ducard
Played by Liam Neeson, Ducard is the real Ra's al Ghul. The name Ducard was probably taken from the character Henri Ducard of the comics, a ruthless assassin.
Abilities
Ra's shows proficiency in swordplay and martial arts. He is also charismatic enough to have an entire league of ninja be loyal to him.