Birthday: June 13
Height: 185 cm
Weight: 79 kg
Shoe Size: 28.5 cm
Blood Type: AB
Likes: Wabisabi, birds, pickled dishes
Dislikes: People who say too much, caterpillars, carbonated drinks
Special Skills: Win tasting, Aikido

A 59-year-old leader of the Iga clan and the Grey Wolves. He serves as a political critic in the front world. His ideal is to change history and achieve equality among humans with the Shinra Banshou, fascinating and winning the loyalty of many subordinates, as seen with Yukimi and Raikō. Hattori takes in many outcasts, such as Yukimi, Kazuho, Raikō, and later Yoite, offering them a place in the Grey Wolves.

Despite this kindness, Hattori has little qualms about eliminating whoever opposes him, seen when he orders the Kasa to dispose of Yoite when he defies Hattori. After the Shinra Banshou's latest activation, he temporarily retires from Nabari and entrusts the Grey Wolves and Kasa to an unknown person who is later referred to as Inasa.