Sagaru Yamazaki  

Anpanman, Jimmy, Mohi-chan, Mountain Zaki, Zaki, 山崎 退

Yamazaki is an artificial intelligence assistant designed to gather information. In many episodes, Hijikata catches him playing badminton alone and defeats him. He often dresses up as a badminton-playing version of Echizen Ryoma from The Prince of Tennis. During episode 62, he said "Mada mada dane," which is Ryoma's catchphrase. Although his role as a ninja is inspired by Yamazaki Susumu, it is rarely utilized beyond one unsuccessful attempt to spy on Gintoki. Despite their rivalry with Shinpachi, they often see eye-to-eye out of their respective groups. Despite being popular among fans, Sorachi has stated that he will never appear on a cover of a Gintama volume. His name is derived from the historical figure Yamazaki Susumu.