Also known as: 雨男, レイニー, あるドロイドの息子
Deuteragonist of The Story of a Droid, a story set in Kato Takuji's Mechanical Buddy Universe. Adoptive son of Blau (Mechanical Buddy Universe). His name is later revealed to be Rainy, because it was raining when Blau first found him as an abandoned infant.