Funassyi is an anthropomorphic yellow pear fairy originating from Funabashi, Chiba Prefecture, created by a local citizen to promote the area through a personal website. This character lacks a defined gender and typically wears a light blue shirt with a red bow on the collar.

Within *Eiga HappinessCharge PreCure! Ningyō no Kuni no Ballerina*, Funassyi appears in a minor role. During the film's prologue, the character flees from a rampaging Saiark monster alongside civilians. Later, Funassyi uses a Miracle Light—distributed by the fairies Ribbon and Glasan—to channel energy to the Pretty Cure team during their battle inside the fictional Doll Kingdom, repeating this action in the climax to empower the Cures against the primary antagonist, Black Fang.

Funassyi maintains a consistently positive and energetic personality, adhering to a self-described policy of "appearing anywhere to spread joy," aligning with the creator's concept of embodying relentless optimism regardless of circumstance.

Outside the film, Funassyi's background includes being the "fourth of 274 children" born from ordinary pear trees, with a stated age of 1,883 years as of 2021. The character frequently ends sentences with "nassyi," a pun on the Japanese word for pear ("nashi"). While not an official municipal mascot due to mutual agreement preserving creative freedom, Funassyi received a formal letter of appreciation from Funabashi's mayor for tripling pear sales and boosting the local economy.

The character's activities extend to music releases, merchandise sold through "Funassyiland" stores, and live performances like headlining the "Nassyi Fes" concert at Budokan. Funassyi also engages in philanthropy, including donations for Kumamoto disaster relief and support for children affected by the 2011 Tōhoku earthquake.