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

Jessica Jade Andres

Suki

John D'Alonzo

Zhao's Assistant

Keong Sim

Earthbending Father

Isaac Jin Solstein

Earthbending Boy

Edmund Ikeda

Old Man of Kyoshi Town

John Noble

The Dragon Spirit (voice)

Morgan Spector

Lead Fire Nation Soldier

Karim Sioud

Fire Nation Prison Guard

Manu Narayan

Fire Nation Head Prison Guard

Kevin Yamada

Earth Kingdom Prisoner

Ted Oyama

Kyoshi Villager

Ritesh Rajan

Fire Nation Soldier

George DeNoto

Teahouse Child

Manuel Ishkhanian

Nervous Prison Guard

Roberto Lombardi

Fire Nation Soldier

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)

Jeffrey Mowery

Northern Water Tribe Villager (uncredited)

Kristian Francis Falkenstein

Fire Nation Soldier (uncredited)