Mina Ashido, hero name Pinky, boasts light pink skin, yellow irises with black sclerae, and two pale yellow horns as distinctive traits of her Quirk. Her short, fluffy pink hair is slightly darker than her skin. Overusing her Quirk during the Final War caused temporary changes: her horns elongated and straightened, while the left side of her body lost pigmentation and suffered burns. Though these injuries healed post-war, her horns remained longer and slightly bent into adulthood. Her "Prism Sky" hero costume features a camouflage-patterned bodysuit, acid-proof boots with sole holes enabling secretion-based mobility, and a fur-lined waistcoat. Eight years after the Final War, she discarded her mask and redesigned her boots for improved acid flow. Academically, Mina struggled significantly, frequently ranking low in Class 1-A and expressing anxiety over exams. Dedicated tutoring, such as Momo Yaoyorozu's study sessions, helped her pass critical tests like U.A.'s end-of-term written exam. Her perseverance showed when she sought English homework help from Shota Aizawa, leading to notable score improvements. Her backstory includes attending Mustafu Private Middle School, where peers saw her as a future hero due to her personality and Quirk. A pivotal incident involved confronting Gigantomachia to protect friends; she used deception to divert him before collapsing in fear afterward. This act of courage, witnessed by Eijiro Kirishima, highlighted her heroic instincts despite terror. She later took the U.A. Entrance Exam alongside Kirishima, destroying villain bots and performing rescues to gain admission. Her Acid Quirk allows secretion of corrosive liquid from her skin, with precise control over viscosity and solubility. She avoids lethal concentrations, making her Quirk suitable for non-lethal combat and utility like climbing or creating barriers. Key techniques include the defensive "Acid Veil," wide-range "Acid Shot," and momentum-based throw "Acid Layback." During the Final War, she awakened "Acidman: Alma," maximizing acidity to penetrate Gigantomachia's near-invulnerable skin. This overuse temporarily altered her physiology, showcasing her Quirk's evolved potency. Her combat style emphasizes agility and improvisation, leveraging dancing skills for enhanced reflexes and close-quarters mobility. Within Class 1-A, Mina shares a longstanding bond with Kirishima, rooted in their middle school experiences and mutual growth. She frequently interacts with Tsuyu Asui and Kyoka Jiro socially and openly supports Ochaco Uraraka's romantic feelings for Izuku Midoriya, often teasing Uraraka. A notable moment occurred when she accidentally called Aizawa "Dad" during a vulnerable study session, reflecting her trust; he responded with implicit approval despite colleagues' teasing. Her journey culminated in graduating U.A. and achieving the rank of No. 28 Pro Hero. It highlights balancing innate courage with confronting fear, exemplified when facing Gigantomachia a second time during the Final War. Initially traumatized by their first encounter, she overcame this to deliver a critical attack, marking her evolution from cheerful student to resilient hero.