Sorry, you mean a Thai guy?
Taiwan, Taiwanese.
Thailand, Thai.
The ladyboy thing in Thailand is overblown anyway. They have good food, I love Thai snacks and drinks.
I can confirm that most Asian countries don't like jeets. I'm not sure about other ones, but China has a particular slur for jeets that's been around since the 80s. It originated in Shanghai, called 阿三 (ah San) which sounds like "saar" in the Shanghainese dialect (ah seiii).
And again, this happened because of the Eternal Anglo. The bongs imported lots of jeets to patrol Shanghai. There's a lot of history behind his slur that I won't get into. Look it up, it's quite fascinating. Chinese racism is really innovative.