Noah Ringer

Aang

Dev Patel

Prince Zuko

Nicola Peltz Beckham

Katara

Jackson Rathbone

Sokka

Shaun Toub

Uncle Iroh

Aasif Mandvi

Commander Zhao

Cliff Curtis

Fire Lord Ozai

Seychelle Gabriel

Princess Yue

Katharine Houghton

Katara's Grandma

Francis Guinan

Master Pakku

Damon Gupton

Monk Gyatso

Summer Bishil

Azula

Randall Duk Kim

Old Man in Temple

John D'Alonzo

Zhao's Assistant

Keong Sim

Earthbending Father

Isaac Jin Solstein

Earthbending Boy

Edmund Ikeda

Old Man of Kyoshi Town

Roberto Lombardi

Fire Nation Soldier

John Noble

The Dragon Spirit (voice)

Ritesh Rajan

Fire Nation Soldier

Morgan Spector

Lead Fire Nation Soldier

Jessica Jade Andres

Suki

Karim Sioud

Fire Nation Prison Guard

Kevin Yamada

Earth Kingdom Prisoner

Dee Bradley Baker

Appa / Momo (voice) (uncredited)

Manu Narayan

Fire Nation Head Prison Guard

Ted Oyama

Kyoshi Villager

Georgie DeNoto

Teahouse Child

Manuel Ishkhanian

Nervous Prison Guard

Chris Brewster

Kicking Firebender

Ryan Shams

Lead Archer

Jeffrey Zubernis

Water Tribe Soldier

Brian D. Johnson

Water Tribe Soldier

J.W. Cortes

Fire Lord Attendant

M. Night Shyamalan

Firebender at Earth Prison Camp (uncredited)

Ben Cooke

Avatar Roku (uncredited)