Cathy is a fictional character in an anime series, depicted as a talking cat companion to the protagonist. She originates from the Flower Planet alongside a talking dog named Nouveau, dispatched to Earth on a mission to find someone capable of locating the legendary Seven Color Flower. This artifact is required for the ascension of a new ruler to the Flower Planet's throne.

Her primary role involves accompanying and assisting the protagonist on a journey across various European locations. This quest centers on helping people encountered along the way while searching for the magical bloom. She provides support and companionship as part of a core trio undertaking this mission.

The character faces consistent opposition from antagonists seeking to thwart the mission and seize the flower for their own ambitions. Despite these challenges, she remains a steadfast ally focused on the core objective.

Official media, including the original television series and subsequent international adaptations and compilations, consistently portray her in this supportive companion role. Available information does not detail significant personal evolution, a distinct backstory beyond her planetary origin and mission, or unique character arcs across episodes, films, or other official extensions. Information regarding specific appearances or developments in spin-offs, sequels, or remakes is not available within the provided sources.

International adaptations resulted in renamed versions: Cathy in ZIV International's English dub, Lily in Harmony Gold's later English film adaptation, and Kati or Katie in the Brazilian Portuguese dub. These adaptations retained her fundamental characteristics as a talking feline companion integral to the central quest.