Pochita

Pochita's true Devil form is of a large, muscular humanoid Devil with two forearms split at the elbow of each hand and a chainsaw protruding from each, with another chainsaw coming from the front of his head, similar to Denji's Hybrid form. Unlike Denji, he has horns on his head and does not appear to have visible eyes in his true form, though this doesn't seem to affect his sight. He towers over regular-sized humans and possesses dark armored plates or scales that cover his entire body. An intestine still connected to his stomach is wrapped around his neck, resembling a scarf or a collar. It can be used to carry people or impale opponents with brute force.

After making a contract with Denji, Pochita assimilates himself with him, fusing with his heart and becoming part of Denji's anatomy, thus creating a hybrid. This allows Denji to become Chainsaw Man by pulling the chainsaw cord in his chest.

In this state, Pochita is smaller, has lost the chainsaw on his head, all his appendages and both handles. Pochita also has blood vessels connected to Denji. Pochita however still retains his trademark cute canine face. Denji's chainsaw cord is also directly connected to the top of Pochita's head.

Pochita deeply cared for Denji after his life was saved by the human, despite the Devil's general hatred toward humankind. He willingly gave up his heart to Denji so that he could fulfill his dreams which Pochita loved hearing about. He also showed that he knows Denji very well and is able to mimic Denji's personality and behavior to fool Makima.

Pochita exhibits a more erratic personality when in his true Devil form, as shown when he quickly murders anyone who expressed even the slightest bit of hostility towards him in the burger joint. Later, he tells Denji that he always dreamed of being hugged, but his strength made that impossible, implying that his murder spree at the burger joint was accidental due to him being unable to properly control his strength around others.

He also seems to answer the calls of help from humans and Devils alike, proven when he saved both Makima and Kobeni from their problematic situations, though he later brutally assaulted the former after completing his task.

In spite of being a devil, Pochita appears to have a form of attachment or respect for humanity. This can be supported by the fact he has consumed various devils that are dangerous to humanity, such as the AIDS Devil, Arnolone Syndrome Devil, Light of a Star That Breaks Children's Minds Devil, Mount Hio Eruption Devil, Nazi Devil, World War II Devil and the Sixth Sense Devil. By consuming the Nuclear Weapons Devil & partially consuming the War Devil, he also prevented any more wars from rising and the risk of nuclear armageddon.

Abilities Being regarded as the Devil that Devils fear the most, the Chainsaw Devil is considered one of the most powerful entities in the series after the Primordial Devils and the Four Horsemen, being able to fend off hordes of Devils in Hell unscathed. The hunt for his heart alone was enough to cause an international conflict, and even Makima, one of the Four Horsemen, considered herself inferior to him, needing the public's adoration to weaken and defeat him. Per the Death Devil's plan, she empowered the Chainsaw Devil along with Yoru, as such, he exhibits a significant power boost.

As a Devil, the Chainsaw Devil possesses all of the standard Devil abilities. These include the ability to make contracts with humans, restore his health by consuming blood and revival into hell after his death. However, unlike most of the Devils, certain aspects of his personality have never changed. No matter how many times he was killed, he would always come back to killing other Devils.

His first contract with Denji was that, in exchange for consuming his blood, Pochita assists him to pay his debts. It is confirmed later on as a real contract rather than the "promise" presented by a young Denji. Later on, after Denji is fatally injured by the Zombie Devil, Pochita became the heart of Denji in exchange for Denji living a "happy life."

As noted by Beam, the Chainsaw Devil was renowned for his amazing speed. When fighting Makima and the hybrids, he effortlessly assaulted them before they could even react. He moves almost instantly, making it look like he is teleporting to his opponents. When the Hell Devil was summoned to defeat Chainsaw Man, it couldn't even attack before being effortlessly dismembered.

The Chainsaw Devil's body is incredibly tough, being able to survive sonic lashes, explosions, piercing attacks, massive concussive blasts capable of sending him into space and atmospheric entry burns with little to no major repercussions. He was also able to survive the onslaught of Makima's Thousand Year Spear attack, even when weakened by public adoration, though he was in critical condition thereafter.

As a full Devil, Pochita's regenerative abilities are enhanced to the point that he completely regenerated his body from just his heart after throwing it from space without needing blood, even when suffering intense atmospheric entry burns. Later on, this ability of Pochita was used cleverly by Denji that he removed Pochita from his body by leaving his body without a heart and let Pochita regenerate completely to mimic Denji and fool Makima.

: The Chainsaw Devil is infamously able to consume other Devils, causing the "name" they represent to vanish from public consciousness while also erasing their physical existence. Barem Bridge speculates that chainsaws may have had many different uses originally, but Chainsaw Man repeatedly consuming Devils and erasing their related concepts eventually left the chainsaws' only use to cut down trees, with Pochita's concept erasure being a remnant of that.[15] Kishibe was unable to recall historical events or things such as the Holocaust, Nazis or nuclear weapons, meaning that the Chainsaw Devil at some point consumed their respective Devils.[12] When an erasure happens, any object, creature or phenomena associated with the concept ceases to exist, as well as memories of it - however, the world immediately "adapts" to this absence, as if the concept had never existed. Furthermore it seems to take the path of least resistance, for example when the Ear Devil was erased, all animals lost their ears, but objects related to the sense of hearing, such as phones, ear picks and radios, were recontextualized rather than destroyed. It appears that certain concepts erased by Pochita can be brought back into existence if the components of the original concept still exist: atomic bombs were recreated by the United States despite Pochita consuming the Nuclear Weapons Devil since the radioactive components and the armaments to craft the nuclear weapons still exist. This demonstrates a potential limit to Pochita's powers. The erasure process can also be partial: after the War Devil was partially devoured, the concept of "war" has remained, but no more wars have broken out in the human world. Powerful attacks can force Pochita to vomit the devils he consumed and restore their concepts to existence.

As an embodiment of fear of chainsaws, protruding from Pochita's head is a chainsaw shaped appendage that functions as an actual chainsaw.[1] This ability is activated when the cord in his tail is pulled. As a full Devil, besides his head, he has four arms with chainsaw appendages. He can also generate chainsaws from his legs.

Pochita is able to disconnect his chains from his chainsaws to wrap around his opponent's body. He uses this to pull them closer to him. He's able to capture multiple opponents with it. Beam claimed that the Chainsaw Devil could use his chains to hook around buildings to move around quickly in the past, but this has yet to be seen currently.

Pochita is the Chainsaw Devil who embodies the concept of chainsaws. He was the original Chainsaw Man prior to becoming Denji's heart.

Denji has a girlfriend named Asa Mitaka who is in the same class as him at 4th East High School.

When Yoru (the War Demon) was about to die in a demon attack, the War Demon Yoru took over half of his body. This way, when he took control, the War Demon Yoru took control of the body. However, the User couldn't control him when he was afraid. Because they were in the same body, Yoru shared feelings with Asa. Asa was in love with Denji, so Yoru was in love with Denji, just a bit more violently. The reason for the war demon Yoru and the Saw Demon Pochita was that while they were fighting in Hell, the War Demon ate most of Yoru's power, leaving him weak. However, since nuclear weapons were reinvented, Yoru became stronger again.

Pochita can voluntarily end the transformation and return control of her body to Denji. When this happens, Denji returns to human form.

Denji and Pochita are still in the same body, and when Pochita calms down, Denji appears again.