He's the current temporary leader of Skill-Out, after Komaba Ritoku's death and Hamazura Shiage's absence.
He is the agile type of fighter and not very big. He usually wears black clothes decorated with white cross patterns.
Hattori Hanzou is kind of a frivolous character. According to Kuruwa, a kunoichi who is familiar with Hanzou, he is a descendant of a ninja family (the Fuuma clan, though translations differ on the exact clan), who supposedly left when offered the place of becoming the head of the family and strike back at the Koga ninjas. His views on ninjas is that they should just hide in the flow of history, not be out in the open like Kuruwa suggests. He's seems to be pretty informed, even having knowledge of cases such as the Gemstones.
In SS2, after being caught by Yomikawa Aiho in an incident when he, Shiage, and Komaba robbed an ATM, he fell in love with her.
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