The Dragon of the West

The great General Iroh, who laid siege to Ba Sing Se for 600 days. But, after his son Luten was killed, he abandoned the siege and left the great city behind in defeat. (I'm actually proud of this one, which hasn't happened in months. Iroh is actually easier to draw for me than Zuko is.)
The Dragon of the West, Master of the White Lotus tile, eldest son and former heir of Firelord Azulon, "amateur botanist," tonedeaf, blue lightning and firebender, owner of The Jasmine Dragon, it's Iroh!
He's a wise old man who enjoys his tea, but there is much about him that we don't know. He has done some things in his past that are unscrupulous, but he is quickly redeeming himself in the show.

Some of my favorite quotes of Iroh:

"General Sung: I have the situation under control. I assure you the Fire Nation cannot penetrate this wall. Many have tried to break through it, but none have succeeded.
Toph: What about the Dragon of the West? He got in.
General Sung: Well, uh, technically yes. But he was quickly expunged."

"Ugly Customs Lady with a mole: You telling me how to do my job?!
Iroh: Uh, no no no. But may I just say that you're like a flower in bloom, your beauty intoxicating.
Ugly Customs Lady with a mole: You're pretty easy on the eyes yourself handsome. Rawrrr. Welcome to Ba Sing se.
Zuko: I'm going to forget I saw that."

"Hehe, Prince Zuko, you're really going to get a kick out of this. The missing lotus tile was in my sleeve the whole time!"

Zuko: "What are you doing firebending your tea?! For a wise old man, that was a pretty stupid move!"

Iroh (c) Bryan and Mike
Quotes taken from episode transcripts on Avatarspirit.net