Chien will play King Kuei, ruler of the Earth Kingdom. Zhou will play Joo Dee, a public servant and guide for important visitors in Ba Sing Se. Yu will play Lady Beifong, Toph's mother.

As per Variety, Chin Han will play Long Feng, Hoa Xuande will play Professor Zei, Justin Chien is King Kuei, and Amanda Zhou is Joo Dee. Crystal Yu (Lady Beifong), Kelemete Misipeka (The Boulder ...