I remember when people thought Viz would change Naruto's name in the English. The fanboys were livid that an American company would be touching something Asian. Your assumptions are baseless, Animeniax. The cast is multiracial and there's no good reason for them to make any radical changes based solely on the actor's ethnicity.

Also Goku's gi had kanji on it because it was written for a Japanese audience, not because he himself was any particular ethnicity.

Also Also I really want to discuss how homo sapiens would evolve on different planets now. Could they have ethnicities that we don't?? Does Eugenics exist on another world? How are the Space-Black People treated?