Yu's name is a potential reference to the Chinese character 餘 / 余 (Mandarin: ㄩˊ yú, Japanese on reading: ヨ yo) which means "leftover scraps", alluding to his job of collecting spare mechanical components.
[[Special:Contributions/2406:3003:206B:96F:14BA:95DF:F8E:42CB|JustKidding456 (talk) 14:58, November 9, 2019 (UTC)]]