Motokichi is a middle-aged, short, and squat man. He has short, black hair and dark circles around his eyes. Being a high-ranking member of Border, he usually wears a suit.
Motokichi is a grumpy and rough man, becoming easily angered. He does, however, have a soft spot for young children, having a daughter of his own.
- His surname is an inversion of tanuki (狸?), which means "raccoon dog" in Japanese. In Japanese folklore, tanuki are rivals of kitsune (狐?), the inversion of Netsuki's surname.
- He likes his family, his job, cup noodles, and taking walks.