Power — Chainsaw Man

Biography

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Chainsaw Man

Powerパワー

Blood Fiend and Public Safety Devil Hunter assigned to Special Division 4

Power is the Blood Fiend in Tatsuki Fujimoto’s manga Chainsaw Man, a devil inhabiting a human corpse who serves as a Public Safety Devil Hunter in Special Division 4. Assigned to work with Denji, she turns her own blood into weapons and treats almost every situation as an opportunity to proclaim her superiority. Beneath her noisy self-interest is a fiercely genuine attachment to her cat, Meowy, which complicates her first encounter with Denji.

Biography

A Blood Fiend in Public Safety

Power enters the story as a fiend: the Blood Devil occupying a human body rather than an ordinary human hunter. Although fiends are generally targets for extermination, Makima keeps Power in Public Safety because she retains enough intelligence to be trained and deployed. She becomes Denji’s partner in Special Division 4, where her appetite for battle is matched by her lack of discipline.

The Cat and the Bat Devil

Before her partnership with Denji settles into anything resembling trust, Power is desperate to retrieve Meowy from the Bat Devil. She tricks Denji into approaching the devil’s hideout and delivers him as the human the Bat Devil demanded in exchange for the cat. The bargain goes wrong: the Bat Devil swallows both Power and Meowy. Denji fights the creature and cuts them free, giving Power a reason to reconsider the human she was willing to sacrifice.

An Unruly Housemate and Teammate

Power joins Denji in Aki Hayakawa’s household, turning routine meals and chores into arguments. Her greed, dishonesty and refusal to follow ordinary rules clash with Aki’s strict habits, while Denji alternates between exasperation and enthusiastic complicity. Working and living together slowly give the trio a kind of improvised domestic routine, even when Power loudly denies needing anyone’s supervision.

Training for a Dangerous Job

As a member of Special Division 4, Power is drawn into increasingly dangerous devil-hunting operations. Kishibe subjects her and Denji to harsh training; when straightforward attacks fail, the pair even attempt a coordinated ambush. Their improvisation does not make Power obedient, but it highlights how differently she approaches danger when forced to work with someone else.

Personality and Motivations

Power is brazen, boastful and spectacularly unreliable as a narrator of her own greatness. She praises her intelligence, claims credit freely and changes her account of events when the truth becomes inconvenient. Her insults and grand declarations are often comic, but her willingness to deceive Denji during the Bat Devil incident shows that her self-preservation is not merely a joke.

Her loyalty is uneven rather than absent. She can be selfish toward strangers and terrified when she meets something overwhelmingly stronger, yet she acts with startling urgency when Meowy is threatened. Living alongside Denji and Aki introduces quieter attachments beneath the bluster, without turning her into a consistently polite or dutiful teammate.

Appearance

In her familiar fiend form, Power has long, light-colored hair that ranges from blond to pinkish tones in manga illustrations and appears strawberry blond in the anime. Two red horns rise from her head, and she has sharp teeth and eyes with cross-shaped pupils. She usually wears a white collared shirt, dark tie and trousers for Public Safety work, often with her jacket hanging loosely from her shoulders.

Quick facts

Nature: Blood Fiend — the Blood Devil inhabiting a human corpse
Early affiliation: Public Safety Devil Hunters, Special Division 4
Early partner: Denji
Companion: Meowy (Nyāko), her cat
Signature weapon: Blood formed into a heavy hammer or other bladed weapons
Japanese anime voice: Fairouz Ai

Abilities

Blood weapon creation

Power forms her own blood into solid weapons, especially a large hammer, and can produce bladed weapons for close combat.

Limitations: Expending too much of her blood weakens her; this is not unlimited weapon creation.

Fiend strength and resilience

Her fiend physiology allows her to strike with more force than an ordinary human and survive injuries that would incapacitate most people.

Limitations: She is not invulnerable and still needs sufficient blood to recover.

Blood-fueled recovery

Drinking blood can restore a devil or fiend’s depleted condition and can intensify Power’s own physical capabilities.

Limitations: Recovery depends on access to blood; her body and powers remain vulnerable to extreme harm.

Sensitivity to blood

Power is able to notice the smell of blood and track it more readily than Denji in their early missions.

Relationships

Denji

Public Safety partner and housemate

Their first encounter involves a dangerous betrayal over Meowy, but Denji’s rescue creates the possibility of trust amid constant bickering.

Meowy

Beloved pet cat

Meowy is the rare creature Power openly treasures, and the reason she risks a desperate bargain with the Bat Devil.

Aki Hayakawa

Senior Public Safety colleague and housemate

Aki’s orderly home becomes the setting for Power’s messy habits, loud demands and increasingly familiar daily life with Denji.

Makima

Public Safety superior

Makima oversees the division that trains and employs Power; despite Power’s bravado, their dynamic is far from equal.

Kishibe

Devil-hunting instructor

Kishibe trains Power and Denji with punishing exercises that repeatedly defeat their direct attacks.

Interesting facts

Power’s horns grow and can develop a second pair when she drinks an unusually large amount of blood.

The change gives a visible indicator of her altered physical condition; the horns are not always a fixed part of her silhouette.

Power rejects vegetables so emphatically that meals at Aki’s home become a recurring source of conflict.

This small domestic habit makes her difficulty adapting to human routines concrete, beyond her behavior during devil hunts.

In a 2020 interview reported by later publications, Tatsuki Fujimoto said that Power drew inspiration from Eric Cartman in South Park.

The unusual comedy reference helps explain the deliberately abrasive, exaggerated way Power is written without treating her as a purely villainous character.

Frequently asked questions

Who is Power in Chainsaw Man?

Power is the Blood Fiend, a devil inhabiting a human corpse who works in Public Safety Special Division 4 alongside Denji.

Is Power a human or a devil?

She is a fiend: the Blood Devil possessing a human body. In Chainsaw Man, that is distinct from an ordinary human and from a devil in its original form.

What are Power’s abilities?

She can shape her own blood into weapons, notably a hammer, and has the enhanced physical abilities of a fiend. Using too much of her blood leaves her vulnerable.

Who is Meowy to Power?

Meowy, also called Nyāko in Japanese, is Power’s cat. Protecting the cat drives her early bargain with the Bat Devil.

Why does Power work with Denji?

Public Safety assigns the two as partners under Makima. Their working relationship begins badly, then changes after Denji saves Power and Meowy.

What does Power look like?

She is recognizable by her long pale-blond hair, red horns, pointed teeth and Public Safety shirt-and-tie outfit.

Major story spoilers below.

Fear After the Darkness Devil

During the International Assassins conflict, Power survives an encounter with the Darkness Devil in Hell but returns badly shaken. She becomes terrified of darkness and needs Denji beside her, even for ordinary activities such as bathing and sleeping. Denji turns down an outing with Makima so that he can stay with Power and Aki; the episode shows a vulnerable side of someone who once acted as though nothing could frighten her.

The Household Falls Apart

As the Gun Devil conflict unfolds, Aki dies during its attack; the Gun Devil subsequently possesses his body, producing the Gun Fiend. Denji ultimately has to destroy the fiend wearing Aki’s body. The ordinary home Aki, Denji and Power built through arguments and small acts of care cannot simply resume afterward.

Makima’s Attack

Power arrives at Makima’s apartment carrying a cake for Denji’s approaching birthday. Makima has arranged the encounter and kills Power in front of him with a sudden attack as he opens the door. The murder is designed to devastate Denji, turning one of the few bonds he had built into another instrument of Makima’s control.

A Brief Return as the Blood Devil

Power has not vanished entirely: some of her blood remains inside Denji from an earlier occasion when he drank it. Pochita urges that surviving remnant to help Denji and allows it to consume his flesh. Power returns for a short time in the Blood Devil’s full form, attacks Makima with blood weapons and momentarily wavers when Makima threatens her.

Choosing Denji and Making a Contract

Power recalls her life with Denji, refuses to surrender him and escapes with him despite terrible injuries. In a dumpster she recognizes him as her first human friend. She gives Denji her blood in a contract: he must find the Blood Devil after its eventual rebirth and become its friend again, so that it can become Power. Reincarnation will not preserve their shared memories, and her request asks Denji to begin their bond anew rather than retrieve her unchanged.

The Blood She Leaves Behind

Power’s final gift matters in Denji’s confrontation with Makima. Denji fashions a chainsaw from her blood and uses its disruptive effect inside Makima’s body to interfere with her regeneration long enough to gain an advantage. Power does not physically rejoin him in that battle; the result comes through what she entrusted to him.

The Altered Reality in the Manga Finale

In the manga’s final chapter, published in March 2026, Pochita’s self-erasure leads to an altered version of the beginning of Denji’s story. Rather than Pochita reviving Denji after the Zombie Devil incident, Power saves him with her blood and claims his service. Nayuta, not Makima, brings Power and Denji into her devil-hunting arrangement, and the two attend school. Power is alive alongside Denji in this rewritten reality. This is not a straightforward survival or resurrection of the Power who died earlier; the story changes the circumstances of their meeting rather than showing Denji fulfilling his earlier promise in the original timeline.

Additional story facts

In Chapter 71, Denji’s care for a frightened Power includes bathing alongside her, while he reflects that the intimacy does not feel romantic or sexual.

The scene distinguishes companionship and caregiving from romantic attraction, which is important when describing Denji and Power’s changing bond.

The rescue and farewell in Chapter 91 take place in a dumpster, echoing the place where Pochita once saved Denji at the start of the manga.

That repeated setting links Power’s final act of friendship with the story’s original life-saving bargain.

Spoiler questions

Does Power die in the original Public Safety storyline?

Yes. Makima kills her in Chapter 81. A remnant of her blood later allows a brief return, after which she gives Denji her blood and disappears again.

What contract does Power make with Denji?

Power gives Denji her blood in exchange for his promise to find the Blood Devil after it is reborn and try to befriend it so that it can become Power again.

How does Power help Denji defeat Makima?

Denji uses the blood she entrusted to him to form a chainsaw and disrupt Makima’s recovery during their final confrontation.

Does Power return in the ending of Chainsaw Man?

Power appears alive in the rewritten reality shown in Chapter 232, where she saves Denji and the two work together under Nayuta. This is distinct from saying that the original Power simply survived her Part 1 death.

Has the manga confirmed that Denji finds the reincarnated Blood Devil from his original contract?

No. Chapter 232 instead depicts a rewritten beginning in which Power saves Denji and the two meet under different circumstances. The original promise is not shown being fulfilled before that change.

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