What we can learn from "Avatar: The Last Airbender" characters. There's so much more to learn from each one of them, but this is a good start. :) I love this show because of everything you can learn from the characters
The fire nation hat/crown thing could be because they're fire lords? Like maybe they used to just make the avatar fire lord until like at one point before Roku was born? Like maybe Roku was the first avatar from the fire nation to not also be Fire Lord?