Cyborg Grandpa G
Other names: CYBORGじいちゃんG, Cyborg Jiichan G
*Often makes a cameo appearance in the artist's various works including Hikaru no Go. His name is Tokijirou Kaizou, a brilliant scientist who has decided to spend his waning years taking things much easier: caring for his family, farming on his own plot of land...and transforming himself into a 2000-horsepower cyborg!?