Eric Nam Aang (voice) Dave Bautista Tagah (voice) Jessica Matten Katara (voice) Román Zaragoza Sokka (voice) Steven Yeun Zuko (voice) Dionne Quan Toph (voice) Dee Bradley Baker Appa / Momo (voice) Freida Pinto Avatar Sonam (voice) Ke Huy Quan Avatar Xian (voice) Taika Waititi Gorillavark (voice) Geraldine Viswanathan Kallik (voice) Peta Sergeant Jie (voice) Jonathan Ohye Yuddah (voice) Vic Chao Hong (voice) François Chau Monk Gyatso (voice) Ronny Chieng Fire Nation Messenger (voice) Keone Young Avatar Roku (voice) Tim Dang Grand Chamberlain (voice) Ken Jeong Cabbage Merchant (voice) Isis Celilo Rogers Water Tribe Kid (voice) Talon Proc Alford Water Tribe Kid (voice) Miller Tai Ho Tun (voice)