Uncle Iroh is made of total win.

I love that while his backstory is still tantalizingly indeterminate, he really does not seem to be playing a role—he is a legendary general, a powerful firebender, and all sorts of more than meets the eye, and he is also serious about his tea, his board games, and time out for roast duck. Also, he's voiced by Mako. Dude.

(and you will know when you meet them--oh why oh why does English not have a gender-neutral/indeterminate pronoun?)

(Seriously. "One" does not work in all contexts.)

I shall keep an eye out!