Guest Stars Lim Kay Siu as Gyatso Utkarsh Ambudkar as King Bumi Danny Pudi as Sai Sebastian Amoruso as Jet Lucien-River Chauhan as Teo Albert Nicholas as Earthbender Army Justin Wong as Minstrel Co Starring James Sie as Cabbage Merchant Seth Ranaweera as Omashu Captain Emily Schoen as Minstrel Wilson Kwok as Minstrel Russell Jung as Diplomat Sunnie James as Sergeant Gayle Yamamoto as Bureaucrat Pradnesh Prakash as Young Bumi Akshaya Pattanayak as Royal Advisor Shastina Kumar as Minstrel Jon Ray Dy Buco as Minstrel Andy Kalirai as Servant