Appearing consistently throughout the "Sylvanian Families: Mini Story" franchise, the character is known as "Kurumi Risu Mother." She belongs to the squirrel family and is specifically part of the Kurumi Risu group. Her family includes her son, Kurumi Risu-kun (Ralph Walnut), and her partner, Kurumi Risu Otosan (Cedric Walnut).

This character holds the same role across multiple seasons of the series, including "Mini Story Clover," "Mini Story Ivy," and "Mini Story Peony." She is consistently credited as "Kurumi Risu Mother" and frequently appears alongside characters named Miranda, Ralph, and Sky. In the English adaptation of the franchise, she corresponds to the character Yardley Walnut from the Sylvanian Families/Calico Critters toy line.

The character also features in "Sylvanian Families: The Movie."