I saw this on the Harry Potter spot and though I'd try it here.
The rules are simple: you have to name anything (Legend of Korra or Avatar related) beginning with the last letter of the post above you. You can repeat a word if it's already been used, we're not super strict here. ;)
Person 1: Korra
Person 2: Avatar
Person 3: Republic City
And so on. I'll start: Bolin