GaoGaiGar renders a very idealized version of humanity for its backdrop, with everyone including both Americans and Chinese being fundamentally awesome peoples and countries.
As for Fuuryu and Rairyu, the aforementioned Chinese robots, they were originally programmed to be more militeristic in their thinking and regard human lives as a lower priority compared to Hyoryu and Enryu, their Japanese robot siblings (they are all identical models, barring equipment), who were programmed as rescue robots and thus considers human lives a top priority.
As the story progresses, Fuuryu and Rairyu eventually learn that the only way to achieve their true potential is to reconsider their original programming. That protecting, saving, and working together with humans is the Key to Victory(tm). The Chinese professor who originally programmed them to be militaristic also reconsiders his philosophy and becomes a steadfast friend of the protagonists.
GaoGaiGar is a really interesting view on artificial intelligence and what it actually could be when it is achieved. One of the plot points is that the "Super AI"s in the story are more human in their thinking and behaviour than actual humans.
