She is Japanese with black hair tied into a ponytail that she holds in place with a pink hairbow. She wears a pink hoodie with a bear on the front, a black miniskirt, white knee socks, black Mary Janes and light pink lipstick.
- Kumiko's character in The Simpsons: Tapped Out was only available for a limited time, during the week of her marriage in The Simpsons.
- She returned for a limited time in the Destination Springfield 2017 event.
- During her debut appearance, she wears a Japanese Sailor Fuku, with a strong resemblance in appearance to the 1991 manga and anime heroine, Sailor Moon.