P.J. Byrne
voices Bolin
David Faustino
voices Mako
J.K. Simmons
voices Tenzin
Seychelle Gabriel
voices Asami Sato
Mindy Sterling
voices Lin Beifong
James Remar
voices Tonraq
Zelda Williams
voices Kuvira
Dee Bradley Baker
voices Naga
Dee Bradley Baker
voices Pabu
Anne Heche
voices Suyin Beifong