After Mei Hatsume, Hawks and Itsuka Kendo in the character pass, or as a standalone.
Appearance
Tetsutetsu is a young man with quite long, messy gray hair which is rather peculiar in that it never seems to change shape, and black eyes which are tilted dramatically inwards, each lined with a very thick, jagged, tan-colored substance, which are presumably his eyelashes. He doesn’t appear to have any notable eyebrows, and, like Eijiro Kirishima, he has rows of sharp, pointed teeth.
His hero costume consists of a dark green jumpsuit, cut off just below his chest, with some small, silver-rimmed holes in the lower section of his baggy pants and black boots with metal soles, heels, and front plating. He has steel straps over his shoulders and under his arms, made up of multiple pieces, which connect at a red oval in the center of his chest, with two thinner bands around his biceps and a small plate on either side of his waist. He wears a metal jaw-guard around his face, similar to the one Eijiro wears, just thicker and not connected over his nose or around his chin, with the letters “Fe” (which stands for iron in the periodic table) stamped on a plate on each side of his face.

Personality
Tetsutetsu is defined by his very hot-headed and outspoken personality. He is confident, stubborn, and very straightforward in his motivations and actions. He tends to be very vocal about his intentions and has a one-track mind, often looking for the simplest solution to problems in order to solve them in the most direct manner. During battles, Tetsutetsu’s direct personality shows through his tenacious and upfront fighting style.
Abilities
Overall Abilities: Tetsutetsu has proven himself to be a very formidable individual on numerous occasions. His abilities earned him 8th place in the U.A. Entrance Exam, having the fourth-highest amount of villain points. Thanks to his Quirk, Tetsutetsu’s fighting style is straightforward and reckless, letting his hardened body take opposing hits while delivering counterattacks. As even bullets cannot pierce his skin when his Quirk is active, Tetsutetsu is capable of turning himself into a human shield for allies or defenseless civilians.
Quirk
Steel: Tetsutetsu’s Quirk allows him to turn his skin into steel.
This power grants Tetsutetsu both augmented defensive abilities to withstand attacks, as well as the augmented strength of his unarmed physical attacks.