Spoilers will be below!
Well, I don't think Iroh is minor enough to count so I'll have to stick with my second favorite old dude! BOOMI!
Not only is Boomi epic enough to bend rocks with his face he also manages to disguise his evil tactical genius with the disguise of a kinda senile old dude. That, or his is a kinda senile dude but also a tactical genius. Either way it's too awesome for words!
So what about you? Who is your favorite minor character?
Tomorrow: If you could challenge anyone to an Agni Kai, who would you choose and why?