Hizashi is a tall, slim man with long blond hair, which he wears spiked upwards in a large tuft behind his head, and a small brown mustache. He has rectangular eyes with concentric greenish-yellow pupils (red in the manga), and he is almost always seen with a large smile on his face and has never been seen drawn with nostrils.
His hero costume consists of a black jacket with a very tall collar, upturned and complete with studs, and matching black pants and knee-high boots. He sports tan shoulder pads and a red belt and elbow pads, all studded, and black fingerless gloves. His neck is always obscured by a directional speaker which he uses with his Quirk. He always wears a pair of headphones with the word "HAGE" written on the headband and a pair of orange-tinted shades.
His hero costume when he was a second-year student is similar to the current one, although it lacked the shoulder pads and the directional speaker. Hizashi carried megaphones attached to his wrists that he used to boost his Quirk. These megaphones would later be replaced by his directional speaker in the present day.
Hizashi's coloring in the manga.
Hizashi during his time at U.A.
Hizashi's costume during his second year at U.A.
A headshot of Hizashi.
Hizashi maintains the eccentric persona of a radio host. He often poses when he talks and maintains a certain level of excitement or volume regardless of the situation. His attitude made Kyoka Jiro mistake him for a simple announcer rather than an actual Pro Hero.
When in front of a crowd of people, he often attempts to bring his audience up to his level by getting them involved (he sometimes refers to them as his 'listeners', even while on a live stage). He will continue to act this way regardless of the crowds' response. He also has a good people sense, knowing to restrain Shota Aizawa from a crowd of reporters, a situation that could have resulted in widespread negative publicity. He has a great aversion to bugs, to the point where he faints when too many are in his general vicinity. He admits to much preferring urban areas to forested ones.
Though he tends to be a jovial individual, Hizashi is capable of great rage as demonstrated by his reaction to discovering that Kurogiri is a Nomu created from the corpse of his late friend, Oboro Shirakumo and his confrontation with the man responsible, Kyudai Garaki.
Keen Intellect: Hizashi was the first of the teachers to point out the possibility of a traitor in U.A., even stating his reasons for why this would be the case.
Bilingualism: Hizashi is an English teacher at a Japanese school, which implies that he is fluent in both languages.
Voice (ヴォイス,Voisu?): Hizashi's Quirk allows him to increase the volume of his voice, giving him an ability that is similar to a sonic scream. The sound from Hizashi's Quirk is strong enough to cause people's ears to bleed from far away.
The only known weakness of this Quirk is that the loud sounds do not travel well underground, making this Quirk ineffective against anything that is underground or separated from him by layers of earth.
Loud Voice (ラウドヴォイス,Raudovoisu?): Hizashi raises his voice to higher levels and releases a shockwave strong enough to shatter glass and blowback anything in his way.
DJ Punch (D・Jパンチ,Dī Jei Panchi?): Hizashi throws a strong right hook punch at his opponent.
According to the official tweet, Present Mic's real name would be "Yamada Hizashi" (as stated in the prototypes). In Japan, there is a real radio personality Yamada Hisashi (やまだひさし or 山田ひさし", the host of "Hisashi Yamada's Radi-Unlimited" in TOKYO FM.
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