More news on the voice-acting front. According to this tweet by Jason Marsden, he, Anne Heche, Jason Isaacs and an actress he calls "little girl from Mad Men" are at work in Legend of Korra. Jason Isaacs has previously voice Zhao in Avatar: The Last Airbender. Jason Isaacs joins Dante Basco, Grey DeLisle, Clancy Brown, Dee Bradley Baker, Daniel Dae Kim, James Sie, Kevin Michael Richardson, and Amy Hill as actors who have voiced characters in both series. If rumours around the internet are correct, recording of Book 4 should be under way, so it'll probably be a while before we learn anything about their characters.