An exchange student to Heartland Middle School and a huge fan of Yuma Tsukumo. Rei has his own catchphrase: "think positive." He quickly becomes Yuma's friend, and has a borderline fan-boyish personality towards him. Ray has a very cheerful and loud exterior, which exasperates others at times. He is also very friendly and eager-to-please, but tends to rush recklessly into things and is quite clumsy. Although he usually has good intentions, Rei tends to cause problems or make things worse.