In Black Rain (1989), there is a character that is a henchman of a mafia boss in the Japanese Yakuza. The actor is Rikiya Yasuoka and is just known as "Sugai's Man" or the Yakuza boss's man.
This is a screenshot of him in New York:
But, what I can't understand is why he can't understand Japanese when he is in New York.
When Sato comes to take the plates in New York, he says,
失礼しました = Pardon me
But, Sugai's man says,
What, what did you say?
So, he obviously does not understand Japanese.
But, when they are in Japan, and Nick Conklin goes to talk to Sugai at the golf driving range, he meets him and speaks Japanese to his underling fluently.
Here is a snap of the scene:
Now, remember that Sato was once an underling of Sugai, so he would know this guy and know if he could speak Japanese.