Mina Ashido, a student in Class 1-A at U.A. High School, evolves into the No. 28 Pro Hero after graduation. Her distinct pink skin, yellow irises with black sclerae, and short fluffy pink hair frame a pair of yellow horns that temporarily straightened and elongated during the Final War from Quirk overuse before reverting. Her hero costume, Prism Sky, integrates acid-proof materials with a camouflage-patterned bodysuit and perforated boots for acid-based mobility. Post-graduation updates include longer fur-lined jackets and sleeker boot designs while retaining its core functionality. Academically challenged in written exams, Mina compensates with athletic prowess, ranking 9th in the Quirk Apprehension Test through reflexes and agility. Her Acid Quirk generates adjustable corrosive or non-corrosive fluids for offense, defense, and traversal. Techniques like Acid Veil for shielding, Acidman for armor-like protection, and Alma for high-acidity projectiles were honed under Yoroi Musha’s mentorship, culminating in her melting Gigantomachia’s armor during the Final War. Training also resolved early dehydration issues, enabling sustained acid use without physical strain. Cheerful and socially bold, Mina diffuses conflicts through dance, even converting middle school bullies via breakdance challenges. Her courage surfaces in critical moments, such as confronting Gigantomachia to shield classmates—a act that shook her resolve post-battle but inspired Eijiro Kirishima’s growth. Their bond deepened when he later rescued her during the Paranormal Liberation War. Mina’s playful curiosity about peers’ relationships, notably Ochaco Uraraka’s crush on Izuku Midoriya, reflects her drive to strengthen social ties despite occasional overstepping. Key battles highlight her tactical adaptability: defeating Yuga Aoyama by exploiting his Quirk’s weakness at the U.A. Sports Festival, collaborating with Minoru Mineta in the Joint Training Battle, and enduring Dabi’s flames via Acidman during the Paranormal Liberation War. Post-war, her refined Quirk control and resilience solidified her as a versatile combatant. Post-graduation design changes—longer hair, streamlined costume elements—mirror her matured role as a Pro Hero, balancing offensive precision and defensive innovation.