4. Ra's al Ghul
At #4, we come to the leader of the League of Shadows, Mr. Ra's al Ghul, who was the primary villain in Batman Begins and had a small cameo in The Dark Knight Rises; he is also portrayed by Liam Neeson. He was awesome in Begins, he really was; he had a crucial part of the origin story and was there until the very end where he met his explosive end. He and Bale had great chemistry together, and the amount of memorable lines Ra's came out with is very high. Ra's has always been a massive fan favourite, and I think both comic fans and film fans were satisfied when they saw the final result; his character was brilliant, he was superbly acted and really did do justice to the comics in which Ra's appears. So, who's next?