Kurumi Risu-kun serves as a central character throughout the "Sylvanian Families: Mini Story" series. The character's Japanese name "Risu" explicitly identifies them as a squirrel. Kurumi Risu-kun maintains an enduring presence as one of the primary characters alongside Chocolate Usagi-chan across every season. Within the stories set in Sylvania village, the character holds a core role within the depicted friend group. Kurumi Risu-kun appears consistently in all four seasons—"Mini Story," "Ivy," "Clover," and "Peony"—without significant alterations in role or presentation. The character does not appear in supplementary media like the special short films "The Treasure of Sylvanian Village," "A Town of Dreams," and "Everyone's Big Dream Flying in the Sky," nor in the 2023 film adaptation. Spin-off games such as "Sylvanian Families: Otogi no Kuni no Pendant" and its sequels also omit any reference to Kurumi Risu-kun.