Guest Stars Matthew Yang King voices Appa Matthew Yang King voices Momo Elizabeth Yu as Azula Utkarsh Ambudkar as King Bumi Amber Midthunder as Princess Yue A. Martinez as Master Pakku Irene Bedard as Yagoda Meegwun Fairbrother as Avatar Kuruk François Chau as The Great Sage Nathaniel Arcand as Chief Arnook 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