Mezo Shoji exhibits a heteromorphic mutation with six powerful arms linked by membranous webbing and an elongated face marked by prominent mouth scars. His gray hair and distinct features prompted him to adopt a signature blue mask after unintentionally frightening a child, a precaution he continues to prevent discomforting others. His demeanor blends stoic reserve with fierce loyalty. Shaped by prejudice against his mutation, he cultivates emotional resilience, disdains material excess, and maintains minimalist living spaces. He consistently prioritizes others' safety, demonstrating analytical crisis management and self-sacrificial instincts. Rejecting vengeance-driven paths taken by some heteromorphs, he seeks to dismantle societal barriers through heroic action, recognizing this demands generational patience over violence. Shoji’s Quirk, Dupli-Arms, enables tentacle-like limbs to replicate sensory organs or supplementary hands. Duplicates possess heightened functions: ears pinpoint distant sounds or concealed foes, eyes conduct broad surveillance, and mouths relay communications. The connecting webbing serves as shields or gliding membranes. Replicated organs remain susceptible to damage, inflicting pain and requiring recovery time upon injury. Combat techniques include Octoblow for multi-fisted simultaneous strikes, Octospansion for enlarged fist impacts, and sensory deployment codenamed "Octosearcher" for reconnaissance. His physical prowess supplements his Quirk—540 kg force per arm, augmented speed, endurance, and durability. He placed 6th in U.A.'s Quirk Apprehension Test and 10th academically. Notable engagements: - USJ Incident: Located Toru Hagakure and verified peer safety via enhanced hearing. - Forest Training Camp: Rescued Izuku Midoriya from Dark Shadow, then baited the rampaging Quirk to defeat Moonfish despite limb loss from Dabi’s flames. - Joint Training Battle: Neutralized Pony Tsunotori’s horn assaults and coordinated with Mashirao Ojiro to force a stalemate. - Nabu Island: Shielded Mahoro and Katsuma Shimano from Nine’s debris and lasers, incurring critical injuries. - Final War Arc: Initially overwhelmed by Spinner’s Scalemail mutation but later fought evenly, tearing his mask during combat to reveal his face publicly and compelling Spinner’s retreat. Eight years post-war, Shoji graduated U.A. as the Pro Hero "Tentacole," ranked 9th. He received the Imamura Peace Prize for heroism, grew taller and more muscular, and now wears his gray hair in a ponytail.