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
Adrian LaTourelle
voices Unalaq
Steve Blum
voices Amon
Anne Heche
voices Suyin Beifong