Fold wrote 1. Toph - I think the entire show really took off in book 2 with her introduction. Just an all around great character.

2. Iroh - We all want a wise old uncle who does nothing but drinks tea and gives advice. He's also one of the strongest fire benders we see on the show and has probably the best sense of judgement out of any character.

3. Aang - I actually really appreciate the way that Aang handles himself in the show. I don't want to give away any spoilers, but the ethical code of conduct he follows until the end is really something to be admired. No matter how strong he gets, the things he learns, or the advice he's given, he doesn't really change who he is deep down. That's some serious sense of self.