Juuzou Suzuya is a Special Class Ghoul Investigator. In the past, he went by the name Rei Suzuya (鈴屋 玲, Suzuya Rei). He was first partnered with Yukinori Shinohara, and is now currently the leader of Suzuya Squad.

He was first assigned to the 20th ward and was responsible for the investigation of the Binge Eater. Later, he was assigned to the 13th ward and was investigating the ghoul Nutcracker, along with his squad.