En

En was a former Pro Hero and the sixth user of the One For All Quirk.

Appearance
En was a fairly short man with short, dark hair parted twice away from his narrow eyes.

His hero costume consists of a large jacket with numerous straps and buttons, and a high collar that obscures his mouth and nose. Accompanying this are dark, fairly-baggy pants and large white hiking boots. His forearms are also wrapped in sports tape.

Personality
Not much is currently known about his personality, but he seems to be fairly quiet due to his attire obscuring his mouth and the fact that on his behalf, his predecessor, Daigoro Banjo, introduced him to Izuku Midoriya.

History
At some point in the past, En received One For All from his predecessor, the fifth user Daigoro Banjo, after he was injured and trapped under a pile of rubble. Daigoro extended his injured hand at him so En could acquire One For All after consuming Daigoro's blood.

Some time later, All For One attempted to steal One For All from En twice, but failed. At some point, as the sixth user, he met Nana Shimura. After ending up seriously wounded in a battle with All For One, En gave Nana some of his hair so that she could become the seventh heir of the One For All Quirk.

U.A. Sports Festival Arc
During the fight between Izuku and Hitoshi Shinso in the tournament of the U.A. Sports Festival, Izuku is brainwashed by Hitoshi's Quirk, who orders him to walk out of bounds. Although Izuku tries to resist, he cannot disobey the order, when he is about to cross the edge of the ring, En and the rest of the previous users appear to Izuku as shadowed mental figures. They uncloud his mind and allow Izuku to use One For All in his fingers, allowing him to escape the trance and win the fight.

Pro Hero Arc
For several months, none of the users reappear to Izuku again, until the night before the Joint Training Battle, where En and several of the previous users, including All For One's younger brother and Nana, appear in a dream but with his real appearance, and not as a shadowed figure. The dream shows Izuku memories of the first user.

En says nothing, but the first user speaks for everyone and assures Izuku that he is not alone. Izuku's dream concludes with all of his predecessors looking at him with kind expressions, seemingly aware that he is the ninth wielder of One For All and welcoming him.

Paranormal Liberation War Arc
In the aftermath of the Paranormal Liberation War, when Izuku is rendered comatose, he speaks to all the vestiges within One For All. While conversing, Daigoro mentions that he and En attempted to have One For All stolen twice by All For One, but succeeded both times in keeping One For All from the villain's hands.

Abilities
Overall Abilities: The full extent of En's abilities are unknown, but as a One For All vestige he can be assumed to be quite strong. However, he wasn't strong enough to defeat All For One.

Quirks
Unknown Quirk: En possessed a Quirk of unknown nature that has been added to the core of One For All.

One For All (ワン・フォー・オール): Transferred to him from Daigoro, En's second Quirk allowed him to stockpile an enormous amount of raw power, allowing him to significantly enhance all of his physical abilities to a superhuman level. This resulted in unbelievable levels of strength, speed, agility, and durability.

Chapter Appearances

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Anime Appearances

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Trivia

 * The kanji in his name means "smoke" (煙).
 * En is so far the only user whose name does not possess a kanji in conjunction to what number user they are.