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S3 E12 · Ultimate Lifeform
One-Punch Man is a comedy and sci-fi & fantasy anime series that premiered on TV Tokyo on October 5, 2015. It has 3 seasons and 36 episodes so far and is still airing new episodes. The latest episode, Season 3 Episode 12 "Ultimate Lifeform", aired on December 28, 2025.
Saitama is a hero who only became a hero for fun. After three years of “special” training, though, he’s become so strong that he’s practically invincible. In fact, he’s too strong—even his mightiest opponents are taken out with a single punch, and it turns out that being devastatingly powerful is actually kind of a bore. With his passion for being a hero lost along with his hair, yet still faced with new enemies every day, how much longer can he keep it going?
Last updated
36 episodes · 3 seasons
2015 · 12 episodes · Last episode: 10 years ago
Saitama is a hero who only became a hero for fun. After three years of “special” training, though, he’s become so strong that he’s practically invincible. In fact, he’s too strong—even his mightiest opponents are taken out with a single punch, and it turns out that being devastatingly powerful is actually kind of a bore. With his passion for being a hero lost along with his hair, yet still faced with new enemies every day, how much longer can he keep it going?
One-Punch Man Season 1 release dates →
E12
The inconceivably powerful Lord Boros has traveled untold distances in search of someone who can cure his boredom: Saitama! With the fate of humanity in the balance, will the two champions at last find in each other the worthy opponent they’ve been searching for?
E11
As a colossal spaceship floats in the skies above City A, a member of its monstrous crew battles on the ground against a group of S Class heroes. Despite their powers, they can’t seem to finish it off. Meanwhile, Saitama has boarded the enemy ship on his own.
E10
Saitama tags along to an emergency meeting of Class S heroes and discovers that a seer has foretold a serious danger threatening the Earth. Though the crisis could occur anytime in the next six months, the heroes are surprised to hear the roar of explosions that very hour!
E9
As the battle with the Deep Sea King reaches its climax, more heroes fall to the aquatic despot’s brutal attacks. Which of them has what it takes to be a true hero?
E8
A pack of monsters calling themselves the “Clan of the Seafolk” arrive on the shores of City J intent on invading the land. When the hero sent to fight them is defeated easily by the Deep Sea King himself, Saitama and Genos head for the city to help.
E7
An enormous meteor hurtles toward City Z, forcing the Hero Association to ask its S Class heroes to respond. When all their efforts prove in vain, Genos decides it’s up to him to protect the home of his master and stop the meteor, no matter what the cost.
E6
It’s been five days since Saitama became a professional hero and he has yet to do anything heroic. When Genos informs him that C-class heroes who don’t fight bad guys are dropped from the hero registry after a week of inaction, Saitama heads out on patrol, yet can’t find any criminals or monsters to stop.
E5
Though he’s been doing the hero gig for three years, Saitama realizes that the public knows nothing about him. Determined to get a little recognition, he decides to become a pro hero, but first he must pass the Hero Association tests and become a full-fledged member.
E4
A group of battlesuit-clad terrorists called “The Paradisers” appears in City F, led by an enormous man known as Hammerhead. Calling for the redistribution of wealth, the group targets the fat-cat Zeniru, who in turn dispatches his bodyguard to defeat them. Unfortunately, Saitama is on the same errand.
E3
Saitama and Genos glean information about The House of Evolution and its founder Dr. Genus, a scientist with dangerous ideas on artificial human evolution. Meanwhile, Dr. Genus learns of Saitama’s amazing strength and has plans of his own for One-Punch Man.
E2
A monster is moving toward City Z, one that has been created by the mysterious organization known as The House of Evolution. Genos, a young cyborg, attempts to stop it, but gets in over his head before Saitama happens along.
E1
Saitama is a guy who’s a hero for fun. After saving a child from certain death, he decided to become a hero and trained hard for three years. Though he’s now so strong he can defeat any opponent with a single punch, lately he feels as if, in exchange for overwhelming power, he’s lost something even more important.
2019 · 12 episodes · Last episode: 7 years ago
Saitama, alongside his cyborg disciple Genos, is ready to begin his official duties as a professional hero. But when a new friendship and interest in martial arts prove distracting, the Hero Association is left to deal with a sinister new wave of monster attacks on their own. To make matters worse, their heroes are being hunted! Is Earth doomed, or will Saitama save the day with one punch?
One-Punch Man Season 2 release dates →
E12
Silverfang and Bomb catch up with Garou while the hero hunter is battling Genos, starting a whirlwind battle that draws in more and more combatants as it marches towards its hair-raising climax!
E11
Garou is at last surrounded by multiple heroes and forced to fight, even though he’s covered in wounds and nearly at his limit. The hero hunter still has his incredible ability to read opponents’ fighting styles, but there are surprises in store for all.
E10
The Monster Association issues a challenge to the Hero Association, telling them they have only three days to rescue the hostage Waganma. Elsewhere, Garou tries to recover from his constant fighting, but things don’t quite go as planned.
E9
Just as Suiryu finds himself in the depths of despair, Saitama suddenly appears to help him out. But despite all Saitama’s strength, there’s still something bugging the hero that he just can’t seem to shake.
E8
Goketsu, the first Super Fight Tournament champion, arrives in the stadium. Having now become a monster, he’s aiming to force the Super Fight competitors to turn into monsters themselves. When several do, it’s up to Suiryu to take them on alone.
E7
As the Super Fight tournament heads for its grand finale, the Class S heroes battle to hold back the tide of monster incursions. Meanwhile, Atomic Samurai is setting in motion a plan of his own.
E6
The Super Fight tournament kicks off while Genos takes on multiple monsters who have appeared in City C. Elsewhere, countless monsters are wreaking havoc in multiple areas, but the Hero Association is being overwhelmed by the sheer number of threats.
E5
Monsters from the Monster Association launch simultaneous attacks on all the human cities, attempting to overwhelm the forces of the Hero Association. Meanwhile, the “Super Fight” martial arts tournament kicks off.
E4
Assigned to guard a VIP and his son, Metal Bat couldn't be less thrilled. But when the group is suddenly attacked all hell breaks loose. Meanwhile, Saitama has disguised himself as Charanko in order to enter the “Super Fight” martial arts tournament.
E3
Garou, out hunting heroes, can barely contain his excitement when he gets the chance to battle the S Class hero Tank-top Master. Meanwhile, Silverfang shutters his dojo to begin his own hunt of his former disciple.
E2
Garou issues a declaration of war on the Hero Association through terrifying means, Hellish Blizzard gives Saitama an ultimatum, and Genos decides to eliminate his master's stalker, Speed-o'-Sound Sonic.
E1
Saitama is out shopping with Genos in tow when the pair come across G4, a demonic robot on a mission to eliminate King. Elsewhere, Sitch attempts to recruit various cutthroats, villains and assassins of the underworld to help the Hero Association.
2025 · 12 episodes · Last episode: 10 months ago
Alongside Genos, his faithful disciple, Saitama performs his official hero duties as a member of the Hero Association. One day, monsters claiming to be from the Monster Association suddenly appeared, taking a child of the Hero Association executive hostage. The S-class heroes gather and plan a raid on the Monster Association hideout to rescue the hostage. Meanwhile, Garou, a “human monster” who was taken by the Monster Association during a battle with the heroes, awakens in the Monster Association hideout.
One-Punch Man Season 3 release dates →
E12
The heroes battle monsters while Terrible Tornado faces Gyoro-Gyoro. Orochi appears before Saitama.
E11
Child Emperor rescues Waganma. The heroes take on threat-level Dragon monsters in a deadly fight.
E10
Zombieman faces Vampire, a descendant of a supernatural bloodline, in a brutal, deadly showdown.
E9
Child Emperor finds Waganma and faces Phoenix Man, using his ultimate weapon to protect him.
E8
Tempest Wind and Hellfire Flame, who were ninjas but are now monsters, battle with Flashy Flash.
E7
Heroes arrive in Z City but face a monster ambush. A-class aids while Gyoro-Gyoro watches the fight.
E6
Class-S heroes plan the Monster Association assault, but Amai Mask arrives and clashes with them.
E5
Garou rescues Tareo but is struck by Overgrown Pochi, falling to Orochi and Gyoro-Gyoro.
E4
The heroes prepare for battle without Silverfang and Genos. Garou attacks the Monster Association.
E3
Garou fights Insect God and King the Ripper, while Tareo gets kidnapped. Dr. Kuseno visits Saitama.
E2
On his way to hunt heroes, Garou dines and dashes at a restaurant, but is chased by Saitama.
E1
The heroes plan a rescue of a child kidnapped by monsters, while Garou awakens deep underground.
Yukitoshi Tokumoto
Crablante (voice)
Takuma Suzuki
Fukegao (voice)
Shinya Hamazoe
Marugori (voice)
Ami Naito
Split-chinned Kid (voice)
Hiroki Goto
Super Custom YO649Z Mk. II (voice)
Yoji Ueda
Subterranean King (voice)
Shota Yamamoto
Subterranean (voice)
Yoshiaki Hasegawa
Hero Association Staff (voice)
Kanami Satou
Hero Association Staff (voice)
Kaede Yuasa
Girl (voice)
Miyuki Sawashiro
Mosquito Girl (voice)
Daisuke Namikawa
Dr. Genus (voice)
Jiro Saito
Beast King (voice)
Kenta Sasa
Caster (voice)
Fairouz Ai
Civilian Woman A (voice)
Yasuaki Takumi
Hellfire Flame (voice)
A date for the next episode of One-Punch Man hasn't been announced yet. Follow One-Punch Man in the Streambay app and you'll be notified as soon as a new episode airs.
The most recent episode of One-Punch Man, Season 3 Episode 12 "Ultimate Lifeform", aired on December 28, 2025.
One-Punch Man has 3 seasons with 36 episodes in total.
One-Punch Man first aired on TV Tokyo on October 5, 2015.
Download the Streambay app, follow One-Punch Man, and you'll get a push notification the moment each new episode is released.
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