You think everyone in the Avatar universe isn’t necessarily Asian or Inuit? You’re totally right! The Sun Warriors are analogous to native Central and South American civilizations, and Master Piandao is visually modeled on a Moroccan man, meaning his ethnicity likely contains a mix of both Arab and Black African. 

Oh, you mean you think the Shaolin monk named Aang and the dark-haired girl with eyelid folds and Chinese clothing named Toph Bei Fong are white? Jeez, white supremacy is a hell of a drug.