I still remember??Zuko's first appearance in episode 2. From then to "Tales of Ba Sing Se", its like Zuko is a completely different person. I know it has much to do with Zuko being completely expelled from the Fire Nation rather than just being exiled, but still. If "Tales of Ba Sing Se" was the first episode of Avatar than I have seen, it makes??me think that Zuko was never... well... mean or stubborn or whatever you would like to call it.
Post here what you think