USApyon is a sentient stuffed rabbit toy, originally belonging to Love Momozono during her childhood. It possesses white fur, red eyes, and wears a distinctive pink ruffled dress with a yellow collar. Signs of wear include exposed stuffing protruding from its right ear and back, reflecting extensive use in Love's early years. Though cherished deeply in Love's youth, USApyon was eventually stored in her bedroom closet. Love actively prevented her mother from discarding it, clinging to this connection. While stored, USApyon remained aware, overhearing conversations that revealed Love and her friends as Pretty Cure warriors. During a crisis of mass toy disappearances, USApyon emerged from the closet to plead for the Pretty Cures' intervention. It explained that Toymajin, a collective entity born from abandoned and resentful toys, was seizing toys worldwide from the Toy Kingdom. USApyon firmly countered Toymajin's belief that all children abandon their toys, citing Love's past protection as proof of enduring bonds. Acting as a guide, USApyon facilitated the Cures' journey to the Toy Kingdom using a handwritten permit. It attempted to rally other toys against Toymajin but faced widespread fear. Later, USApyon directly confronted Toymajin, arguing against his vengeful plans and maintaining faith in children's genuine affection. Toymajin forcibly absorbed USApyon into his collective during this confrontation. Learning Toymajin's origin triggered profound guilt in Love, who feared her storage of USApyon equated to abandonment. After the Cures rescued USApyon, Love apologized sincerely. USApyon reassured her, emphasizing that her continued love and past action—specifically saving it from disposal—prevented true abandonment. This mutual affirmation strengthened their emotional bond. Following these events, Love visibly repaired USApyon, applying bandages to its damaged areas. The restored toy now resides on Love's desk, signifying its renewed place in her life. USApyon's name derives from "Usagi" (rabbit) and "pyon" (an onomatopoeic term for a rabbit's hop in Japanese), reflecting its design and nature.