|Voice Actor||Binbin Takaoka|
Genshirou Hattori (服部 玄士郎 Hattori Genshirou?) is a minor character in Jewelpet. He is the head butler of the Arisugawa mansion and King's human partner. A man who studied martial arts, he served the Ariusgawa family for 70 years and protected Aoi with his life. He has seven scars on his back which came from Aoi's childhood, originating from the Takoyaki balls that fell onto his back while protecting her. Because of that, he gains super-human strength and abilities.
- His name is a parody of the main character of Fist of the North Star, Kenshiro, right down to his signature moves.