Tetsutetsu Tetsutetsu, hero name Real Steel, is a U.A. High Class 1-B student who ranked 8th in the entrance exam. Hailing from Saitama Prefecture and born on October 16, he previously attended Anshio Middle School. His Steel Quirk transmutes his skin into durable metal, amplifying defense and strength, though sustained use depletes his stamina due to iron fatigue. To maintain this ability, he consumes iron-rich foods like spinach. While resistant to temperature extremes, excessive heat can melt his metallic form. Tetsutetsu sports chin-length gray hair, sharp teeth, and tilted black eyes with thick lashes. His hero costume features a dark green chest-exposed jumpsuit, steel torso straps, and a jaw-guard etched with iron’s periodic symbol "Fe." Post-graduation, he adopts shorter hair. Activating his Quirk coats his body in a metallic sheen. Hotheaded yet fiercely loyal, he charges into action with unyielding resolve. A rivalry with Class 1-A fuels his determination to elevate Class 1-B’s reputation, though he develops mutual respect with Eijiro Kirishima after their Sports Festival arm-wrestling draw. Sharing a birthday and parallel Quirks, their bond strengthens through joint internships under Fourth Kind and Fat Gum. Key battles define his growth: shielding Itsuka Kendo from Mustard’s poison and gunfire during the Forest Training Camp, and enduring Shoto Todoroki’s flames in the Joint Training Battle until near-melting temperatures forced a stalemate. These clashes showcase his tactical adaptability, such as deducing Mustard’s youth from his uniform or exploiting his heat resistance against Shoto. Rising to No. 26 Pro Hero post-graduation, Tetsutetsu combines brute force with collaborative tactics. His Horn Dash Hammer—launched via Pony Tsunotori’s telekinetic horns—exemplifies this synergy. Signature moves like Steel Fist and the high-risk Heatetsu attack underscore his evolving combat style. Defying retreat orders during the Vanguard Squad invasion, he embodies his creed of confronting threats head-on. This relentless drive, tempered by camaraderie and discipline, charts his journey from impulsive student to a hero who thrives on pushing past limits.