>>24637921
Zhou Mingrui is his Chinese name from before he got isekai'd. Klein Moretti is the outward name of the same character now that he's in fantasy steampunk england.

That said the author really does start scraping the bottom of the barrel and coming up with random shit for English-sounding names later on, with characters like Isengard, Kaslana (named after the MC of a popular chinese gacha game), Ed Sheeran, and I think some more too.