Katsuki Bakugo evolves from childhood arrogance to strategic heroism, fueled by rivalry, self-reflection, and physical sacrifice. Born with the Explosion Quirk, enabling him to detonate nitroglycerin-like sweat from his palms, he cultivated an early superiority complex, relentlessly bullying his Quirkless childhood friend Izuku Midoriya. This behavior arose from conflating strength with heroism and frustration at Midoriya’s perceived weakness. Repeated losses and exposure to skilled peers at U.A. High sparked gradual self-awareness, though his abrasive pride endured. In *Heroes: Rising*, Bakugo’s tactical brilliance anchors Nabu Island’s defense against the villain Nine. Initially dismissive of routine duties, his combat-focused vigilance proves critical when Nine’s forces strike. He uncovers Mahoro Shimano’s illusion by noting the absence of a shadow, revealing sharp perception. Partnering with Midoriya against Nine, Bakugo temporarily inherits One For All through an act of trust, symbolizing their shifting dynamic—though vestiges erase the memory post-battle. Physical changes mirror his growth. Grenade-themed gauntlets evolve into sleeker, streamlined costumes for stealth and efficiency. Later battles leave enduring scars, including injuries from the Paranormal Liberation War and a near-fatal clash with Tomura Shigaraki. Advanced surgical interventions, incorporating All Might-inspired support gear, restore his damaged limbs while preserving visible reminders of struggle. Relationships shift decisively: a public apology to Midoriya marks acceptance of vulnerability and mutual respect. Rivalry with Shoto Todoroki and mentorship under Best Jeanist and Endeavor hone his leadership and tactics. Despite his brashness, he covertly safeguards allies, strategizing rescues in critical moments. His heroism transitions from victory-obsessed to integrating protection. Early failures, like zero rescue points in U.A.’s entrance exam, contrast with prioritizing civilians during Nabu Island’s crisis. Quirk mastery expands beyond raw power—techniques like AP Shot and Howitzer Impact blend precision with environmental manipulation. Post-graduation, Bakugo rises to No. 5 Pro Hero, embodying relentless growth through talent tempered by humility, solidifying his legacy within the hero world.