Refluffing is all the rage these days. I've had a player who refluffed his character into a superhero (in a fantasy campaign, no less; think Super Robert or whatever that guy from Domic Degan was).
Unless everyone's been lying to me and the next bunch of episodes are The Great Divide II, The Great Divide III, Return to the Great Divide, and Bride of the Great Divide, in which case I hate you all and I'm never touching Avatar again.