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Villains Wiki

We're the Yakuza, so you'd better not look down on us!! We're gonna rise up again to take society's control from the shadows! The Yakuza's due for a revival! That's our bedridden boss's greatest dream, and we're gonna make it happen!! You're not gonna wanna miss it! So be grateful, you losers!!
~ Mimic to Himiko Toga and Twice.

Joi Irinaka (入中常衣 Irinaka Jōi), also known as Mimic, is a minor antagonist in the manga/anime series My Hero Academia. He is the general manager of the Shie Hassaikai.

He is voiced by Yasuhiro Mamiya in Japanese and Derick Snow in English.


In his villain attire, Mimic appears as a small humanoid with short arms and stubby legs in a black bodysuit with a white plague mask sewn over where his face should be.

However, his true form is that of a large, muscular man with spiked light-colored hair, a pointed nose and a square-shaped chin with a goatee. He also wears a dress shirt and pinstriped pants with suspenders.


Mimic appears to be a business-oriented individual, due to his role as the general manager of the Shie Hassaikai, and is often seen counting stacks of money. He also appears to have a short temper, and can be prone to intense outbursts when someone shows disrespect or threatening behavior towards Overhaul or the Shie Hassaikai.


Shie Hassaikai Arc

During Overhaul's fight against the League of Villains, Mimic was one of the members of Shie Hassaikai to come to assist the Yakuza don. When Tomura Shigaraki decided to stop fighting for the moment, Mimic mockingly complimented him.

Mimic later attends a meeting between the Eight Precepts and Tomura of the League of Villains at the Shie Hassaikai's base. When Tomura reaches into his jacket, Mimic apprehends Tomura as Chronostasis points a gun to Tomura's head, but Chisaki orders the two to back off so he can hear what Tomura has to say.

After Tomura and Overhaul come to an understanding, he allows Himiko Toga and Twice to temporarily join the Yakuza. Mimic becomes irritated with Himiko and Twice’s attitude and demands they drop the attitude, saying the Yakuza will be our back on top as that is the wish of their comatose boss.

When the Heroes and the Police Force invade the Shie Hassaikai's base, Mimic takes a drug to enhance his Mimicry, allowing him to take control of the underground tunnels. Although Mirio Togata escapes by phasing through the walls, Mimic causes the heroes to fall through the floor and separates them from most of the Police Force.

After Tamaki defeats Toya Setsuno, and two others; Mimic tries to attack Shota, but Fat Gum and Eijiro Kirishima fire in front and are separated from the group. Mimic tries to twist the labyrinth of tunnels as much as he can while Izuku continues to smash through the wall. Mimic is worried because the triggered drug is about to wear off.

Mimic sees Himiko and Twice, so he separates the heroes and police into two separate groups so Himiko and Twice can take them on and then protects them by dropping a wall in front of them when they are forced to retreat. He becomes irritated as he observes Himiko and Twice interacting.

Himiko and Twice start throwing insults at Mimic, causing him to lose his temper and desire to crush them all to death. As a result, he starts twisting the labyrinth to the point where Izuku can hear him more clearly and pinpoint his location. He then smashed through where Mimic is hiding, exposing him. Shota immediately uses his erasure quirk to disable Mimic’s mimicry, leaving him to Ella helplessly to the floor as Himiko and Twice tauntingly wave good bye to him.

As Mimic rages at Himiko and Twice, Sir Nighteye throws high density seals at Mimic, knocking him unconscious, and Izuku catches Mimic, who continued to scream and rage abort Himiko and Twice after he comes to and is tied up.

Powers and Abilties

Mimicry: Mimic's Quirk allows him to transfer his body and mind into an object to control and manipulate it. Under normal circumstances, he can only control objects no larger than a refrigerator. But if the power and strength of his Quirk is given a boost, such as with the drug Trigger, then he can be capable of controlling entire locations.

However, doing this can cause immense strain on Mimic. He also can't fully perceive his surroundings when inside an object, and needs to manifest his body parts onto it's exterior to monitor events going on around him; giving his opponents the chance to locate and attack him.


           Boku no Hero Academia Logo.pngVillains

League of Villains
All For One | Tomura Shigaraki | Kurogiri | Daruma Ujiko | Gigantomachia
Vanguard Action Squad: Dabi | Himiko Toga | Spinner | Twice | Mr. Compress | Muscular | Moonfish | Mustard | Magne | Chainsaw Nomu
Nomus: Kurogiri | Nomu | Chainsaw Nomu | Hood | Woman | Eleph | Robot | Chubs | Ribby
Associates: Giran

Shie Hassaikai
Leaders: Overhaul | Chronostasis | Mimic
Eight Bullets: Rikiya Katsukame | Shin Nemoto | Kendo Rappa | Toya Setsuno | Yu Hojo | Soramitsu Tabe | Deidoro Sakaki | Hekiji Tengai

Meta Liberation Army
Grand Commander: Re-Destro
Leaders: Curious | Trumpet | Skeptic
Warriors: Geten | Slidin' Go
Original Members: Destro

Paranormal Liberation Front
Grand Commander: Tomura Shigaraki
Lieutenants: Dabi | Himiko Toga | Twice | Mr. Compress | Spinner | Re-Destro | Trumpet | Skeptic | Geten
Warriors: Gigantomachia | Slidin' Go
Associates: Daruma Ujiko | Giran

Villain Factory
Kuin Hachisuka | Number 6

Two Heroes: Wolfram | Swordkil | Daigo | Nobu
Heroes Rising: Nine | Slice | Mummy | Chimera
World Heroes' Mission: Humarise (Flect Turn | Beros | Sidero | Serpenters | Leviathan)

Creature Rejection Clan | Dictator | Endeavor | Ending | Gentle | Innsmouth | Kotaro Shimura | La Brava | Lady Nagant | Peerless Thief | Reservoir Dogs | Stain | Starservant | Sludge Villain