P.J. Byrne
voices Bolin
David Faustino
voices Mako
J.K. Simmons
voices Tenzin
Seychelle Gabriel
voices Asami Sato
Mindy Sterling
voices Lin Beifong
Kiernan Shipka
voices Jinora
Richard Riehle
voices Bumi
James Remar
voices Tonraq
Dee Bradley Baker
voices Pabu