Considering all of the gags involving no one understanding Takahashi, I have to imagine the Japanese localization would need to make him Chinese, but if these promo images are to be believed, he’s still speaking Japanese. Also, it would be really weird for a Chinese robot to end up (1) as an American-made Protectron…

“Super” means “over” or “above” as well, as in superscript, which is how you write exponents, or superstructure, which is a structure built on top of another structure. All language comes from somewhere, and English is a Germanic language so stop being so precious about it.