The characters are well made and played. There's nothing to comment about the actors. Some places seem a little forced but that fine. It's not too obvious.
What intrigued me is that after 2 and a half hours of having my eyes glued to that screen, I was expecting to continue for about half an hour more but no. It ended a little bit too fast and I remained there, stoic, not understanding what was happening. The movie overall is very good and has some awesome special effects and gets you entranced into the action but it ends so abruptly! Aish...but still, Warner Bros makes the best movies.