Additionally, Mark Hamill joins the cast to voice Fire Lord Ozai after having minor appearances throughout the first and second seasons of the series, while Greg Baldwin now voices Iroh due to Mako Iwamatsu's passing.
Selain itu, Mark Hamill ikut serta mengisi suara Raja Api Ozai setelah membuat penampilan kecil sepanjang musim pertama dan kedua dari serial tersebut, sementara Greg Baldwin sekarang mengisi suara Iroh karena kepergian Mako Iwamatsu.