Kaoruko Awata, professionally known as Bubble Girl, possesses light blue skin, dark blue ruffled hair, and distinctive yellow eyes. Her hero costume consists of a dark blue crop top revealing her torso below the breasts, white shorts marked with yellow, black tights, thick white boots accented by yellow rings, a transparent visor equipped with air filters, and dark blue gloves. This design originated from fan contest winner Abara Chiita; while initially conceived for a 16-year-old U.A. student, Kaoruko was implemented as a 21-year-old pro hero. Born on March 23 in Ehime Prefecture, she stands 167 cm tall. Her surname incorporates the kanji for "bubble" (泡), and her given name includes "fragrance" (薫), reflecting her Quirk's nature. As a pro hero, she served as a dedicated sidekick under Sir Nighteye at his agency, often worrying about dismissal despite her calm demeanor. Following Sir Nighteye's death in the Shie Hassaikai raid, she continued serving under Centipeder, who assumed leadership. Her Quirk, "Bubble," generates spheres containing any aroma she has previously smelled, from pleasant to foul odors; stress triggers particularly unpleasant scents. She leverages these bubbles primarily for distraction or sensory disruption in combat rather than direct offense. During the Shie Hassaikai arc, Bubble Girl participated in intelligence gathering and the raid on the Eight Precepts of Death. She assisted in briefing other heroes on findings and helped secure the underground labyrinth entrance alongside Centipeder, interrogating captured yakuza about Overhaul. Her analytical skills and composure were evident throughout. In the Final War arc, she appeared during the collective hero mobilization against All For One and the Paranormal Liberation Front. The character sparked fandom controversy regarding her revealing costume design, retained from the fan submission despite the age adjustment, and a scene where Sir Nighteye subjected her to a "tickle machine" as punishment. Her official "Ultra Analysis" profile rates her Technique at B+ (4/6), while Power and Tickle Resistance rank lowest at E (1/6).