Mr. Kataoka more commonly referred to as Grandpa Kataoka, is the father of Tamako Kataoka, the maternal grandfather of Nobita Nobi, the husband of Mrs. Kataoka, and also the father-in-law of Nobisuke Nobi. (Source: Doraemon Wiki) No voice actors have been added to this character. Help improve our database by searching for a voice actor, and adding this character to their roles .