Who Is Beam and When Does He Appear in Chainsaw Man

Beam is the eccentric Shark Fiend in Chainsaw Man, serving as a loyal Devil Hunter within Public Safety Tokyo Special Division 4. Possessing matter-swimming abilities and profound devotion to Denji as the Chainsaw Devil, this core supporting character debuts in chapter 34 of the manga and episode 11 of the anime. Historically a follower of Pochita in Hell, Beam plays key roles in the Bomb Girl and International Assassins arcs. His narrative trajectory expands through the 2025 theatrical film and the forthcoming sequel project, making him a central figure in the franchise’s ongoing cross-media adaptation history.

Who Is Beam in Chainsaw Man?

Beam exists as a Fiend, which occurs when a Devil inhabits a human corpse to preserve its own life. In this case, the human corpse is possessed by the Shark Devil, representing humanity’s collective fear of sharks. Although Beam lacks high-level cognitive intelligence, he possesses immense physical power and can transform portions of his body into a monstrous shark entity.

Within Public Safety, Beam stands out due to his fanatical reverence for Denji. Because Denji has Pochita’s heart, Beam views him with absolute devotion, regularly referring to him as “Lord Chainsaw.” This forms a unique dynamic where Beam acts as Denji’s partner, combat mount, and protector. While other Division 4 members occasionally have complicated fates of their own, such as whether Power ultimately survives after reincarnating as the Blood Devil, Beam remains a constant, unwavering ally.

When Does Beam First Appear in the Manga and Anime?

The character debuts during the cleanup phase of the Katana Man conflict. While early competitor guides mistakenly state that he appears halfway through Volume 5, Beam’s literal debut occurs in manga Chapter 34 (“Full Team”), which serves as the final chapter of Volume 4. In the television anime, his debut occurs in Season 1, Episode 11 (“Mission Start”), which broadcast on December 21, 2022.

What Is the Complete Release Schedule for Beam’s Animated Appearances?

Following the conclusion of the television adaptation’s first season, the production studio MAPPA transitioned the series into cinematic features. Beam plays a critical humorous and narrative role in the theatrical feature, which adapts the entirety of the “Bomb Girl” storyline.

Currently, the upcoming Chainsaw Man: Assassins Arc has no confirmed release date. While internet rumors suggest a premiere in mid-2027 or early 2028, MAPPA and Shueisha have not committed to a definitive broadcast window.

What Are Beam’s Physiological Traits and Tactical Abilities?

Anatomically, Beam is a muscular young man who exclusively wears swimming trunks. The upper portion of his head is replaced by a hard, dark-grey shark snout and a prominent dorsal fin. He possesses no visible human eyes, yet has sharp, triangular teeth matching Denji’s dentition.

Beam possesses highly specialized abilities as the Shark Fiend:

• Matter Swimming: Beam can swim through solid matter, including soil, concrete, and building walls, as if it were water. He cannot carry other individuals or large objects with him through solid matter.
• Enhanced Durability: His body is highly resilient, surviving point-blank concussive explosions from Reze.
• Devil Transformation: Beam can grow his head into a massive, multi-eyed shark jaw. In his full transformed state, his entire body becomes a massive prehistoric shark featuring three pairs of eyes (six total) and four pectoral fins that function as legs.
• Lore of Pochita: Beam retains his memories from Hell. Makima later reveals that Beam was a member of a fanatical sect of Pochita followers who worshipped the Chainsaw Devil. This past connection explains his devotion and his deep tactical knowledge of Pochita’s combat history. During the fight with the Typhoon Devil, Beam explains that the original Chainsaw Devil used to swing through buildings using his chains as grappling hooks, a strategy Denji immediately replicates.
• Fear of Makima: When questioned by Aki Hayakawa as to how he knows details about the Gun Devil and Bomb Devil, Beam panics, stating that Makima would kill him if he revealed more.

This fear of Makima aligns with other Division 4 staff members who find themselves subject to her terrifying influence, echoing the same manipulation explored in whether Aki ultimately dies under Makima’s control.

What Behind-the-Scenes Trivia Exists About Beam’s Production?

Following the theatrical premiere of the Reze Arc film, original creator Tatsuki Fujimoto publicly expressed a level of narrative regret regarding Beam’s early death in the manga. During the official stage greetings, Fujimoto provided the following statement:

“After watching the film, I couldn’t stop thinking about Reze-chan and couldn’t sleep! It was amazing! Beam-kun worked about twice as hard as in the manga, so I wish I had treated him more carefully! To everyone who made the movie! To everyone involved! To everyone who watched it! Thank you so much!”

This admission highlights how the animated medium elevated Beam’s visual and kinetic role. Director Tatsuya Yoshihara, who replaced Season 1 director Ryu Nakayama, specifically sought to enhance the scale of the action. Yoshihara utilized a Cinemascope (2.35:1) aspect ratio to capture the vertical scale of the Typhoon Devil and the high-speed “shark-riding” skyscrapers sequence. Furthermore, Yoshihara worked with compositing director Teppei Ito to change the color profile of the explosions throughout the film to prevent visual fatigue, steering away from traditional orange-and-yellow color palettes.

How Does Beam Connect to the Wider Dandadan Universe?

A notable cross-media connection occurs in the extra pages (omake) of Shueisha’s collected Japanese Dandadan Volume 23, illustrated by Yukinobu Tatsu. Before creating Dandadan, Tatsu served as a primary assistant to Tatsuki Fujimoto during the serialization of Fire Punch and Part 1 of Chainsaw Man. To honor his former mentor, Tatsu inserted Denji and Beam directly into the events of Dandadan Chapter 199.

During their aerial battle against the Typhoon Devil in the Chainsaw Man universe, Denji (mounted on Beam’s fully transformed shark form) is caught in a severe wind current. They are thrown directly into Dandadan‘s Chapter 199 battle, where the cast is fighting a typhoon human, airborne sharks, and a Mongolian Death Worm around a commercial airplane. While Denji initially wants to avoid the conflict, he immediately dives in after making visual contact with the alien girl Vamola through the airplane window. The bonus chapter concludes with Denji and Beam being washed ashore on a beach where a female lifeguard assists them, leading to Denji immediately flirting with her.

While officially published by Shueisha, this crossover is strictly non-canon. The chronological timelines of the two franchises are entirely incompatible: Chainsaw Man is canonically set in the late 1990s (specifically 1997), highlighted by the active geopolitical existence of the Soviet Union, while Dandadan takes place in the post-2009 modern era, featuring modern smartphone technology and occult magazines referencing Barack Obama’s presidency.