Katsuki Bakugō, recognized by the childhood moniker "Kacchan" and his chosen hero name "Great Explosion Murder God Dynamight," is a central character from the main series. Born to Mitsuki and Masaru Bakugō, his Quirk "Explosion" manifested during preschool, enabling him to secrete and ignite nitroglycerin-like sweat from his palms for detonations. Early power development and excessive praise cultivated a superiority complex and aggressive demeanor. Raised in Shizuoka Prefecture, he attended Aldera Junior High and bullied childhood acquaintance Izuku Midoriya, perceiving Midoriya's Quirklessness as weakness and resenting perceived pity. His academic and combat excellence secured top marks in U.A. High School’s entrance exam through villain points alone, earning zero rescue points. At U.A., Bakugō consistently ranked among Class 1-A’s elite, winning the Sports Festival but failing the Provisional Hero Licensing Exam due to abrasive civilian interactions. His hero costume, crafted by Nimaru Sasori, incorporates grenade-shaped bracers storing sweat for amplified blasts, injury-focused knee guards, and a sharp headpiece. Functionality expanded with winter sleeves boosting sweat production and shoulder-mounted "Suppressive Heavy Mobile Suit: Strafe Panzer" machine guns. Bakugō’s combat style leverages explosive propulsion for mobility ("Explosive Speed") and techniques like the blinding "Stun Grenade," piercing "AP Shot," and high-impact "Howitzer Impact." Overexertion causes physical strain, with advanced moves like "Cluster" intensifying power at increased personal risk. Kidnapped by the League of Villains and rescued in an incident prompting All Might’s retirement, he experienced profound guilt. This spurred pivotal growth: deducing Midoriya’s inheritance of One For All, confronting him in a cathartic duel, and evolving from solitary aggression to tactical teamwork. During the Paranormal Liberation War, he sacrificed himself to shield Midoriya from Tomura Shigaraki, sustaining fatal wounds. Revived by Edgeshot’s "Zenith" ability, Bakugō later delivered a crucial apology to Midoriya, admitting past bullying originated from inferiority and envy toward Midoriya’s innate heroism. In *Heroes: Rising*, his deuteragonist role emphasizes development when temporarily inheriting One For All from Midoriya against Nine. He fused it seamlessly with his Explosion Quirk for enhanced techniques like "Detroit Smash" and "Howitzer Impact: Cluster." This power-sharing highlights earned trust with Midoriya and dedication to collective triumph over individual glory. Post-graduation, he funded a support suit for Midoriya after the latter’s Quirk loss, became a top hero, and aspired to co-found a hero agency.