Chieri Ogata is a 16-year-old female idol standing 153 cm tall with dark red hair styled in high pigtails secured by yellow scrunchies, brown eyes, and body measurements of 79-55-80 cm. Her blood type is A, and her birthday is June 11, placing her under the Gemini zodiac sign. Hailing from Mie Prefecture, she entered the idol industry to overcome her social anxiety, viewing it as a path to build self-confidence and transform what she perceives as her "weak-willed" nature. Her personality blends shyness, gentleness, and a tendency toward stress with consistent diligence in her work and a warm-hearted disposition that often leads her to express wishes for others' happiness.

A defining aspect of her character is her cherished collection of four-leaf clovers, rooted in a significant childhood memory where she associates them with luck. This motif prominently features in her official merchandise and stage outfits as a recurring design element. Her association with clovers, combined with her meek demeanor and artistic portrayals featuring angelic wings, inspired fans to affectionately nickname her "Archangel Chieriel" (大天使チエリエル). She is categorized under the "cute" idol type with orchid as her theme color. Her core traits—social anxiety, dedication to self-improvement through idol work, and the symbolic clover motif—remain central to her portrayal.