Minoru Mineta trains as a Pro Hero student in U.A. High's Class 1-A. He has a short stature, large round head, puffy cheeks, and dark purple hair forming four prominent ball-shaped clumps like a mohawk, later featuring an added stem. His oval eyes have large black pupils and thin eyebrows. His hero costume includes a purple shirt, mask, yellow cape, boots, gloves, and white pants with lighter purple trim. Eight years post-Final War, he grows taller yet remains relatively short, sporting faint stubble and a slightly chubbier but fit physique; his costume stays largely the same, adding arm bands and communication headphones.
Mineta exhibits pervasive perversion and timidity. He frequently voices lewd thoughts and engages in inappropriate behavior like peeping or unwanted contact, making him unpopular, especially with female peers and some males. He openly cites popularity and female attention as his motivations for heroism, showing no shame and displaying jealousy towards those perceived as cool while hypocritically criticizing similar behavior. Despite this, he demonstrates moments of genuine kindness, comforting Izuku Midoriya and apologizing to Mezo Shoji. He reacts to danger with extreme fear, crying or acting impulsively, but gradually develops courage through U.A. experiences. He ranks 9th in class midterms with minimal visible studying and devises creative strategies, showing notable intelligence.
His Quirk, Pop Off, lets him produce and pluck adhesive purple balls from his scalp. These balls stick to any surface except himself, usable as projectiles, restraints, or trampolines for mobility. Adhesive strength and duration depend on his health; overuse causes scalp bleeding, mitigated by training. His primary Ultimate Move, Grape Rush, involves hurling ball clusters while charging to immobilize foes. He also creates defensive tools like the Grape Buckler shield. His combat style focuses on support and trapping, enabling allies to win, demonstrated during the U.S.J. incident and the Midnight exam where he exploited psychological tendencies.
Mineta's motivations shift from selfish desires towards heroic ideals. Witnessing deaths in the Paranormal Liberation War causes severe trauma. In the Final War, he acts selflessly, pleading with All For One to take his Quirk instead of Fumikage Tokoyami's, risking his hero career. After graduation, he serves as Mt. Lady's sidekick before founding his own agency, rising to No. 108 Pro Hero. His perverse tendencies persist professionally, drawing criticism for inappropriate fan messages, yet he cultivates a covert following admiring his sporadic bravery and commits to ongoing self-improvement.
He maintains close friendships with Denki Kaminari, bonding over shared interests, and admires Izuku Midoriya's determination. His dynamic with Tsuyu Asui fluctuates; she punishes misconduct but acknowledges his battle contributions like at U.S.J. Female classmates, especially Momo Yaoyorozu, consistently reject him. His interactions with mentors like Midnight reveal strategic awareness of psychological traits, leveraged in combat. Outside heroics, he displays artistic talent, co-leading manga illustration projects with refined designs.