Guest Stars Matthew Yang King voices Appa Matthew Yang King voices Momo Elizabeth Yu as Azula Amber Midthunder as Princess Yue Utkarsh Ambudkar as King Bumi A. Martinez as Master Pakku Irene Bedard as Yagoda Nathaniel Arcand as Chief Arnook Meegwun Fairbrother as Avatar Kuruk François Chau as The Great Sage Joel Oulette as Hahn Co Starring Taio Gelinas as Trainee Shota Tsuji as The Captain Allen Jia-You Keng as Lookout Tyler Peters as Small Boy Ellicia Jade as Small Boy's Mother Stevie Nande as Small Boy's Father