#5 Ricardo Montalban as Nakamura
In another Brando movie, Sayonara (1957), Red Buttons (who died only last week) was a fighter pilot stationed in Kobe who married a local Japanese woman. When ordered back to America without being able to take his wife, they committed suicide together.
Ricardo Montalban (a Mexican) portrayed a Kabuki actor. Unfortunately I don't have any pictures of him (but it was likely more realistic than Marlon), but it must have been a Fantasy role for him.
Here he is in Star Trek as KHAN.