Noah Ringer

Character: Aang

Dev Patel

Character: Prince Zuko

Nicola Peltz Beckham

Character: Katara

Jackson Rathbone

Character: Sokka

Shaun Toub

Character: Uncle Iroh

Aasif Mandvi

Character: Commander Zhao

Cliff Curtis

Character: Fire Lord Ozai

Seychelle Gabriel

Character: Princess Yue

Katharine Houghton

Character: Katara's Grandma

Francis Guinan

Character: Master Pakku

Damon Gupton

Character: Monk Gyatso

Summer Bishil

Character: Azula

Randall Duk Kim

Character: Old Man in Temple

Jessica Jade Andres

Character: Suki

John D'Alonzo

Character: Zhao's Assistant

Keong Sim

Character: Earthbending Father

Isaac Jin Solstein

Character: Earthbending Boy

Edmund Ikeda

Character: Old Man of Kyoshi Town

John Noble

Character: The Dragon Spirit (voice)

Morgan Spector

Character: Lead Fire Nation Soldier

Karim Sioud

Character: Fire Nation Prison Guard

Manu Narayan

Character: Fire Nation Head Prison Guard

Kevin Yamada

Character: Earth Kingdom Prisoner

Ted Oyama

Character: Kyoshi Villager

Ritesh Rajan

Character: Fire Nation Soldier

George DeNoto

Character: Teahouse Child

Manuel Ishkhanian

Character: Nervous Prison Guard

Roberto Lombardi

Character: Fire Nation Soldier

Chris Brewster

Character: Kicking Firebender

Ryan Shams

Character: Lead Archer

Jeffrey Zubernis

Character: Water Tribe Soldier

Brian D. Johnson

Character: Water Tribe Soldier

J.W. Cortes

Character: Fire Lord Attendant

M. Night Shyamalan

Character: Firebender at Earth Prison Camp (uncredited)

Ben Cooke

Character: Avatar Roku (uncredited)

Jeffrey Mowery

Character: Northern Water Tribe Villager (uncredited)

Kristian Francis Falkenstein

Character: Fire Nation Soldier (uncredited)