Guest Stars Masaaki Yano voices Yamaguchi-san (robot) Shinya Takahashi voices Keshibishi-gumi Motoi Koyanagi voices Father of Shinpachi Hiroshi Shimozaki voices Mayor Kuroiwa Hiroki Maeda voices Samueda-gumi Takuro Sakashita voices Commander of Riot Police Mei voices Student Taisuke Nakano voices Rockian Satsuki Kokubu voices Student Yuki Aizawa voices Student