
One Punch Man
A bored, bald hero who can defeat any foe with a single punch seeks worthy opponents and respect in a world overflowing with super‑powered rivals, risking his sanity as his invincibility becomes both his greatest asset and his deepest curse.
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In a world populated by superhuman beings, Saitama is a hero with the ability to defeat enemies with a single punch. However, as just one of many heroes in such a world, he finds his life unfulfilling and devoid of meaning. He receives little respect, maintains a laidback attitude toward everything, and largely views his heroic duties as pointless. Additionally, his intense training regimen has resulted in him losing all his hair. These are the adventures of a hero who is both ordinary and extraordinary.
Seasons & Episodes
Season 112 episodes · premiered Oct 6, 2015
- 1.01The Strongest ManOct 6, 2015Rate

Saitama becomes a hero after saving a child and undergoing intense three-year training, gaining the ability to defeat any opponent with a single punch. However, he now struggles with the emptiness and loss of meaning that comes with his overwhelming power.
- 1.02The Lone CyborgOct 13, 2015Rate

A powerful creature, created by the mysterious House of Evolution, is heading toward City Z, prompting Genos, a determined cyborg, to confront it. Overwhelmed by the threat, he is soon joined by Saitama in an effort to stop the monster from reaching the city.
- 1.03The Obsessive ScientistOct 20, 2015Rate

Saitama and Genos investigate The House of Evolution and its controversial founder, Dr. Genus, who advocates for radical artificial human evolution. At the same time, Dr. Genus becomes aware of Saitama's extraordinary power and begins formulating his own plans involving the One-Punch Man.
- 1.04The Modern NinjaOct 27, 2015Rate

A militant group called the Paradisers, led by the large and imposing Hammerhead, appears in City F and begins advocating for wealth redistribution through violent means. Their main target is the affluent industrialist Zeniru, who dispatches his personal bodyguard to counter the threat—only to discover that Saitama is also participating in the mission.
- 1.05The Ultimate MasterNov 3, 2015Rate

Saitama, a superhero with three years of experience, finds that the public is largely unaware of his existence. In an effort to gain recognition, he decides to pursue professional hero status by taking the Hero Association's qualifying exams and working toward full membership.
- 1.06The Terrifying CityNov 10, 2015Rate

Saitama, newly certified as a professional hero, struggles to find any villains or threats to fight within five days, risking his status as a C-class hero if he remains inactive for a full week. With Genos warning him of the consequences, Saitama takes to the streets in search of action but encounters no enemies.
- 1.07The Ultimate DiscipleNov 17, 2015Rate

A massive meteor heads toward City Z, prompting the Hero Association to call upon its top S Class heroes to prevent disaster. When their attempts fail, Genos takes it upon himself to save the city and his master's home, determined to stop the meteor at all costs.
- 1.08The Deep Sea KingNov 24, 2015Rate

A group of sea creatures known as the Clan of the Seafolk launch an invasion on City J. After the designated hero is quickly defeated by the powerful Deep Sea King, Saitama and Genos travel to the city to assist in the battle.
- 1.09Unyielding JusticeDec 1, 2015Rate

In the final confrontation with the Deep Sea King, several heroes are overcome by his relentless attacks, prompting uncertainty about who truly has the strength and determination to be regarded as a real hero.
- 1.10Unparalleled PerilDec 8, 2015Rate

Saitama accompanies the other Class S heroes to an emergency meeting where a seer warns of an impending threat to Earth within six months. Just as the meeting begins, explosions are heard, hinting that the danger may be closer than expected.
- 1.11The Dominator of the UniverseDec 15, 2015Rate

A massive alien ship hovers over City A as one of its creatures battles a team of S Class heroes, who find themselves struggling to gain the upper hand. Meanwhile, Saitama secretly infiltrates the ship in an effort to confront the enemy from within.
- 1.12The Strongest HeroDec 22, 2015Rate
Lord Boros, a powerful and eternally bored entity, seeks out Saitama in search of a worthy challenge. Upon arriving on Earth, the confrontation begins, with the potential to decide the future of humanity.
Season 212 episodes · premiered Apr 9, 2019
- 2.01Return of the HeroApr 9, 2019Rate

Saitama and Genos come across G4, a formidable robot with the goal of destroying King, while Sitch attempts to form a team composed of dangerous criminals to aid the Hero Association.
- 2.02Human MonsterApr 16, 2019Rate

Garou declares war on the Hero Association through a startling method, Hellish Blizzard forces Saitama to make a crucial decision, and Genos confronts Speed-o'-Sound Sonic, who has been troubling his master.
- 2.03The Hunt BeginsApr 23, 2019Rate

Garou becomes excited at the opportunity to fight the S Class hero Tank-top Master, while Silverfang closes his dojo to pursue his former student.
- 2.04Metal BatApr 30, 2019Rate

Metal Bat is reluctantly assigned to protect a VIP and his son, only for the mission to descend into chaos when they come under attack. Meanwhile, Saitama infiltrates the "Super Fight" tournament by impersonating Charanko.
- 2.05Martial Arts TournamentMay 7, 2019Rate

The Monster Association launches large-scale attacks on several human cities, challenging the defenses of the Hero Association. Concurrently, the annual "Super Fight" martial arts tournament commences, diverting attention from the intensifying conflict.
- 2.06The Uprising of the MonstersMay 14, 2019Rate

The Super Fight tournament opens with Genos engaging in combat against multiple monsters attacking City C, while various regions around the world experience large-scale monster invasions that the Hero Association is unable to contain.
- 2.07The Class S HeroesMay 21, 2019Rate

As the Super Fight tournament nears its final stage, Class S heroes face escalating challenges in defending against a surge in monster attacks. Concurrently, Atomic Samurai initiates a plan of his own.
- 2.08The Resistance of the StrongMay 28, 2019Rate

Goketsu, the first champion of the Super Fight Tournament, returns to the stadium as a monstrous being with the goal of transforming other competitors into monsters. As some fighters succumb to his influence, Suiryu confronts them alone in an effort to stop the transformation.
- 2.09The Troubles of the StrongestJun 11, 2019Rate

When Saitama arrives to help Suiryu, the dragon is overcome by a deep sense of despair. Despite Saitama's immense power, the hero finds himself unable to fully resolve the lingering issue that continues to weigh on Suiryu's mind.
- 2.10Justice Under SiegeJun 18, 2019Rate

The Monster Association issues a three-day ultimatum to the Hero Association, demanding the rescue of the hostage Waganma. At the same time, Garou tries to recover following a series of battles, though his efforts are hindered by unforeseen complications.
- 2.11The Varieties of PrideJun 25, 2019Rate

Garou, severely injured and nearly spent, is cornered by a group of powerful heroes and forced into battle. Despite his weakened state, he uses his remarkable ability to anticipate his opponents' moves, though unexpected developments challenge everyone involved.
- 2.12The Wiping of the Disciple's ButtJul 2, 2019Rate
Silverfang and Bomb run into Garou while he is in the middle of a brutal fight with Genos, sparking a chaotic battle involving multiple fighters. The confrontation escalates as additional combatants enter the scene, heightening the intensity of the conflict.
Season 312 episodes · premiered Oct 12, 2025
- 3.01The Strategy MeetingOct 12, 2025Rate

The team formulates a mission to rescue a child who has been taken by supernatural creatures, while a formidable enemy, Garou, begins to awaken in a concealed underground prison.
- 3.02Monster TraitsOct 19, 2025Rate

Garou stops at a restaurant before heading out to hunt heroes, but after he leaves in a rush, Saitama pursues him.
- 3.03Organism LimitsOct 26, 2025Rate

Garou faces off against the Insect God and King the Ripper in an intense battle, during which Tareo is captured. At the same time, Dr. Kuseno pays a visit to Saitama.
- 3.04Counterattack SignalNov 2, 2025Rate

With Silverfang and Genos absent, the main characters start making preparations for an impending conflict. At the same time, Garou initiates a direct attack on the Monster Association.
- 3.05Monster KingNov 9, 2025Rate

Garou rescues Tareo from a dangerous situation but is then confronted by Overgrown Pochi, which leads to his capture by Orochi and Gyoro-Gyoro.
- 3.06Motley HeroesNov 16, 2025Rate

Class-S heroes devise a strategy to launch an attack on the Monster Association, but their plans are disrupted by the unexpected arrival of Amai Mask, who initiates combat with them.
- 3.07CounterstrikeNov 23, 2025Rate

The heroes arrive in Z City and are immediately ambushed by a powerful monster. A-class heroes join the battle while Gyoro-Gyoro watches the conflict from the sidelines.
- 3.08Ninja TaleNov 30, 2025Rate

Former ninjas Tempest Wind and Hellfire Flame, now transformed into monsters, confront the hero Flashy Flash in an intense battle.
- 3.09Brave ChildDec 7, 2025Rate

Child Emperor faces off against Phoenix Man in an effort to defend Waganma, using his ultimate weapon in the confrontation.
- 3.10Immortal BloodbathDec 14, 2025Rate

Zombieman confronts Vampire, a member of an ancient supernatural family, in an intense and violent confrontation.
- 3.11Top DragonsDec 21, 2025Rate

In a climactic confrontation, Child Emperor rescues Waganma as the group faces off against formidable Dragon-class monsters in a fierce and intense battle.
- 3.12Ultimate LifeformDec 28, 2025Rate
The heroes engage in a fierce battle against a group of monsters, while Terrible Tornado confronts the villain Gyoro-Gyoro. Meanwhile, Orochi makes a dramatic appearance before Saitama, setting the stage for a major conflict.
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Cast & Crew
45 unique people credited
Top billed cast
Makoto Furukawa
as Saitama
Kaito Ishikawa
as Genos
Max Mittelman
as Saitama
Hiroki Yasumoto
as King (voice) (24 Episodes)
Zach Aguilar
as Genos
Kazuhiro Yamaji
as Silverfang (voice) (24 Episodes)
Yuichi Nakamura
as License-less Rider (voice) (24 Episodes)
Kenjiro Tsuda
as Atomic Samurai (voice) (24 Episodes)
Hiromichi Tezuka
as Vampire
Aoi Yuuki
as Terrible Tornado (voice) (24 Episodes)
Saori Hayami
as Hellish Blizzard (voice) (24 Episodes)
Hikaru Midorikawa
as Garou
Supporting cast
32Yoji Ueda
as Drive Knight (voice) (12 Episodes) , Subterranean King (voice) (1 Episode)
Daisuke Namikawa
as Pig God (voice) (12 Episodes) , Dr. Genus (voice) (1 Episode)
Minami Takayama
as Child Emperor (voice) (12 Episodes)
Shota Yamamoto
as Armored Gorilla
Takahiro Sakurai
as Zombieman (voice) (12 Episodes)
Satoshi Hino
as Superalloy Blackluster (voice) (12 Episodes)
Yuji Ueda
as Watchdog Man (voice) (12 Episodes)
Kohsuke Toriumi
as Flashy Flash (voice) (12 Episodes)
Katsuyuki Konishi
as Tank-Top Master (voice) (12 Episodes)
Robbie Daymond
as Chain Toad
Wataru Hatano
as Metal Bat (voice) (12 Episodes)
Masaya Onosaka
as Pri-Pri-Prisoner (voice) (12 Episodes)
Mamoru Miyano
as Handsome Sweet Mask (voice) (12 Episodes)
Kyle Hebert
as D-pad
Yuki Kaji
as Speed of Sound Sonic (voice) (12 Episodes)
Tessyo Genda
as Metal Knight (voice) (12 Episodes)
Shinya Hamazoe
as Ground Dragon (voice) (1 Episode) , Marugori (voice) (1 Episode)
Hiroki Goto
as Super Custom YO649Z Mk. II (voice) (1 Episode) , Kafetch (voice) (1 Episode)
Yoshiaki Hasegawa
as Kamakyuri (voice) (1 Episode) , Hero Association Staff (voice) (1 Episode)
Kanami Satou
as Hero Association Staff (voice) (1 Episode) , Emergency Broadcast (voice) (1 Episode)
Yukitoshi Tokumoto
as Crablante (voice) (1 Episode)
Takuma Suzuki
as Fukegao (voice) (1 Episode)
Ami Naito
as Split-chinned Kid (voice) (1 Episode)
Kaede Yuasa
as Girl (voice) (1 Episode)
Miyuki Sawashiro
as Mosquito Girl (voice) (1 Episode)
Jiro Saito
as Beast King (voice) (1 Episode)
Kenta Sasa
as Caster (voice) (1 Episode)
Fairouz Ai
as Civilian Woman A (voice) (1 Episode)
Yasuaki Takumi
as Hellfire Flame (voice) (1 Episode)
Ryusei Nakao
as Vaccine Man (voice) (1 Episode)
Takehito Koyasu
as Gyoro Gyoro (voice) (1 Episode)
Anna Nagase
as Captain Mizuki (voix) (1 Episode)
Writers
1Technical specs
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Spoiler-Safe Guide
medium confidencesource-verifiedThis guide covers all 36 aired episodes across three seasons (Season 1: 12 episodes, Oct–Dec 2015; Season 2: 12 episodes, Apr–Jul 2019; Season 3 Part 1: 12 episodes, Oct–Dec 2025). Season 3 Part 2 is scheduled for 2027 and is not covered. OVAs are not covered. The Events Index is curated to well-sourced major beats only; monster-of-the-week episodes without confirmed major-beat sourcing are omitted. All ★★★ events are confirmed by at least two independent Tier 1-3 sources fetched this session. The S3E12 Orochi monologue claim has been corrected per Rule 11.
Showing everything up to nothing yet. 19 later beat(s) hidden.
Key: ★ notable · ★★ major · ★★★ series-defining · ✓ confirmed · ~ estimated · ⚠️ limited sources
Major events
Characters
Saitama · debut [S1E1✓]
An ordinary man who trained so hard for three years that he became capable of defeating any enemy with a single punch — and now suffers an existential crisis because nothing can give him a real fight. He works as a C-Class hero (later promoted to B-Class) despite being by far the strongest being alive, and is mostly ignored or disrespected by the public and the Hero Association. His journey is one of searching for meaning and excitement in a world his strength has made trivial.
Genos · debut [S1E2✓]
A teenage cyborg on a mission of revenge against the mad cyborg who destroyed his hometown. He attaches himself to Saitama as an apprentice, constantly upgrading himself but repeatedly falling short in battles Saitama resolves effortlessly. He is placed in S-Class from the start, making him officially superior in rank to his master — a running irony. His arc is about devotion, inadequacy, and the search for power that matches his resolve.
Garou · debut [S2E1✓]
A former student of the martial arts master Bang who was expelled for attacking Bang's other disciples. Garou became fascinated with monsters as a child, sympathizing with villains over heroes. He sets out to become the ultimate monster by defeating heroes, calling himself the 'Hero Hunter.' His arc interrogates whether heroism and villainy are as clearly defined as society claims, and his protection of the child Tareo complicates his self-image as a pure villain. Season 2 ends with him on the verge of a forced monstrous transformation.
King · debut [S2E1✓]
The S-Class Rank 7 hero whose terrifying reputation — 'The Strongest Man on Earth' — is entirely fabricated. Every battle attributed to King was actually won by Saitama who happened to be present. King himself has never once fought. He nevertheless commands respect through sheer demeanor, and his presence alone sometimes defuses situations. His reveal to Saitama is played for quiet irony rather than dramatic confrontation.
Tatsumaki (Terrible Tornado) · debut [S1~]
The S-Class Rank 2 hero and the most powerful psychic in the world. Abrasive, dismissive of weaker heroes, and fiercely independent, she is also one of the few heroes whose power is genuinely comparable to monster threats. Her Season 3 role in the Monster Association arc showcases her at full ability.
Speed-o'-Sound Sonic · debut [S1E4✓]
A professional assassin who becomes obsessed with Saitama as a rival after their first encounter ends with Saitama defeating him accidentally. He is a recurring comedic antagonist whose fixation on Saitama never translates into any meaningful threat.
Boros · debut [S1E10✓]
An alien warlord who has traveled the universe seeking a worthy opponent, driven by a prophecy that one day he would meet a being who could challenge him. He is the first enemy to survive being hit by Saitama, making their fight the closest thing to a real battle Saitama has experienced. He is defeated by the Serious Punch in the Season 1 finale.
Bang (Silver Fang) · debut [S1E7~]
An elderly S-Class martial arts master, ranked third. He runs a dojo and is one of the most skilled close-combat fighters among the heroes. Garou was once his disciple before being expelled. In Season 2, he pursues and confronts Garou alongside his brother Bomb.
Orochi (Monster King) · debut [S3E1✓]
The king of the Monster Association and one of the primary antagonists of Season 3. He is established as the most powerful monster in the association, tasking Garou with a deadly mission. His power and monologues about being the 'ultimate lifeform' come to nothing when Saitama dispatches him in a single punch in the Season 3 Part 1 finale.
AI-assisted and cross-checked against multiple references. ✓ = confirmed from a cited source · ~ = season correct but episode unconfirmed · ⚠️ = limited sources. Spotted a mistake? Use the report button on this page.
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