Nothing more annoying than a white dude who has an Asian girlfriend or wife. Or a white dude obsessed with anything Asian in general.
I know what you mean, but I've met some amazing people here in Japan, in the games industry no less. You kind of have to have a lot of interest in Japanese things to stick it out here. Can't speak for other Asian countries, though.
There is a certain subset of people that are super annoying, though. They tend to be English teachers, not to take from people who are genuinely interested in teaching, but this kind of person just needs any job to be here.