Shinei's older brother. Rei was a generally friendly and reliable older brother, but he was not without his faults.

One night when he was on patrol, he came across a young Vladilena Milizé, who was taken by her father to see the injustices brought upon the Eighty-Six. Their helicopter had been shot by a Stachelschwein and was forced to land, leaving them vulnerable to an attack from a nearby Ameise. He took the only survivor, Lena, to his base and sent her back to inside the Gran Mur.