Suggestions by @ninox

Matthew Yang King

as Momo in Avatar The Last Airbender: Book 3: Fire

Matthew Yang King

as Appa in Avatar The Last Airbender: Book 3: Fire

Yvonne Chapman

as Avatar Kyoshi in Avatar The Last Airbender: Book 3: Fire

C. S. Lee

as Avatar Roku in Avatar The Last Airbender: Book 3: Fire

Momona Tamada

as Ty Lee in Avatar The Last Airbender: Book 3: Fire

Thalia Tran

as Mai in Avatar The Last Airbender: Book 3: Fire

Elizabeth Yu

as Princess Azula in Avatar The Last Airbender: Book 3: Fire

Daniel Dae Kim

as Fire Lord Ozai in Avatar The Last Airbender: Book 3: Fire

Paul Sun-Hyung Lee

as Uncle Iroh in Avatar The Last Airbender: Book 3: Fire

Maria Zhang

as Suki in Avatar The Last Airbender: Book 3: Fire

Dallas Liu

as Prince Zuko in Avatar The Last Airbender: Book 3: Fire

Diana Tsoy

as Toph Beifong in Avatar The Last Airbender: Book 3: Fire

Ian Ousley

as Sokka in Avatar The Last Airbender: Book 3: Fire

Kiawentiio

as Katara in Avatar The Last Airbender: Book 3: Fire

Gordon Cormier

as Aang in Avatar The Last Airbender: Book 3: Fire

Dave Filoni

as Director in Avatar The Last Airbender: Book 3: Fire

Yvonne Chapman

as Avatar Kyoshi in Avatar The Last Airbender: Book Two: Earth

C. S. Lee

as Avatar Roku in Avatar The Last Airbender: Book Two: Earth

Meegwun Fairbrother

as Avatar Kuruk in Avatar The Last Airbender: Book Two: Earth

Ba Sing Se

as "Ba Sing Se Has Been Takeover By Fire Nation" in Avatar The Last Airbender: Book Two: Earth