Guest Stars Matthew Yang King voices Appa Matthew Yang King voices Momo Ruy Iskandar as Lieutenant Jee Elizabeth Yu as Azula Lim Kay Siu as Gyatso Amber Midthunder voices Princess Yue Momona Tamada as Ty Lee Casey Camp-Horinek as Gran Gran Thalia Tran as Mai Arden Cho as June George Takei voices Koh Randall Duk Kim voices Wan Shi Tong Co Starring Ash Lee as Shufen Thomas Hum as Crew Member Ciara Mandel as Lian Rainbow Dickerson as Kya Kimmy Choi as Yuyan Archer Captain Trevor Carroll as Bato Joel Montgrand as Hakoda Winson Won as Muki Simon Chin as Yang Rohain Arora as Patron Tristan Liu as Trainer Tom Lim as Yon Rha Derek Kwan as Patron Meadow Kingfisher as Young Katara Mela Pietropaolo as Young Girl Olivia Kate Iatridis as Ummi Jayson Li as Angry Man Jerry Yang as Crew Member Elijah Chenoweth as Teen Jon Wei Jun Foh as Scruffy Thug