Book 4, Episode 1: Korra stares wistfully out a window. Enter Zuko: 'Avatar Korra, how would you like to go on a field trip?'

Am I the only one who first read it as Filthy Cardassian Waitress?

Energy would be my best guess, but I'm not sure what that leaves for 4. Life? Whatever, sub-question: Book 3 villian! Will it be a Northern Tribe waterbender, Southern Tribe waterbender, Rep.City waterbender, or an unaffiliated… waterbender?

Penny already has a tattoo on her butt.  Her special talent is soup.