In a year that’s seen its share of anime highs and lows, One-Punch Man Season 3 has been a rollercoaster of unmet expectations, studio drama, and fleeting glimpses of the brilliance that made the series a phenomenon. Today marks the premiere of Episode 12, the season finale for Part 1 of this long-awaited arc, airing simultaneously on Hulu in the U.S. and select international platforms like Disney+ in Canada. Clocking in at its standard 24-minute runtime, this episode—titled something along the lines of “The Strongest Hero” in fan translations—attempts to tie up the sprawling Monster Association saga with explosive confrontations and Saitama’s signature nonchalance. But as the credits rolled, social media erupted in a mix of cheers, groans, and outright pleas for the 2027 return of Part 2. Spoiler warning: We’ll dive into the key events below, so proceed if you’re caught up (or don’t mind a few punches spoiled).
A Chaotic Climax Underground: What Went Down
Episode 12 picks up right where the previous installments left the heroes buried deep in the Monster Association’s lair, facing off against the organization’s elite cadre. The bulk of the runtime splits between two parallel battles that have been building tension since the season’s midpoint: the psychic showdown between Tornado of Terror (Tatsumaki) and the enigmatic Gyoro-Gyoro, and Saitama’s casual stroll through the horde, culminating in his encounter with the big bad himself, Lord Orochi.
Tatsumaki’s arc gets the emotional spotlight here. After weeks of her prickly sibling dynamics with Fubuki and raw displays of esper power, we see her unleash in a brutal, mind-bending duel with Gyoro-Gyoro. The villain’s grotesque form and telekinetic barrages push Tatsumaki to her limits—or so it seems—leading to a visually chaotic sequence of crumbling caverns and hurled debris. It’s a payoff that highlights her vulnerability beneath the bravado, with chibi-style cutaways adding a touch of the series’ trademark humor amid the destruction. Meanwhile, S-Class heavy-hitters like Superalloy Blackluster mop up stray threats, showcasing the ensemble cast’s teamwork in a way that’s felt sidelined earlier in the season.
But let’s be real: This is One-Punch Man, and the episode’s heart (and hype) belongs to Saitama. Our bald-headed protagonist, ever the bored observer, treats the Monster Association’s “ultimate guard dog”—a massive, slobbering beast fans dub “Pochi” (Overgrown Rover)—like a oversized puppy. Saitama’s attempts to “play” with it, complete with complaints about villains’ endless monologues, inject pure comedy gold into the tension. The real fireworks, though, erupt when he squares off against Orochi, the dragon-level monarch who’s been hyped as the arc’s apex predator. Without spoiling the exact mechanics, Orochi’s multi-phase transformation and energy blasts set the stage for what should be an epic clash. Saitama, true to form, dispatches him with his “normal punch,” but the execution leans heavily on quick cuts and impact frames rather than drawn-out spectacle. Even the unflappable King gets a nod, his “King Engine” roar accidentally scattering lesser monsters in a hilarious misunderstanding.
The episode wraps on a cliffhanger tease for Part 2, hinting at deeper conspiracies within the Association and Saitama’s inevitable promotion in the Hero ranks. It’s a solid narrative capstone to 12 weeks of subterranean mayhem, clocking in as the arc’s emotional peak while setting up the manga’s infamous “web” developments for 2027.
Noticeable Changes: Fidelity to the Manga, or Creative Cuts?
Adapting One-Punch Man’s Monster Association arc—a sprawling, 100+ chapter beast from ONE and Yusuke Murata’s manga—has always been a tall order. Season 3, helmed by JC Staff after Madhouse’s departure post-Season 2, promised a fresh take but delivered a condensed version that prioritized pace over depth. Episode 12 is no exception, with noticeable deviations that have manga purists up in arms.
Chief among them: The Saitama vs. Orochi fight. In the source material, this is a multi-page extravaganza of escalating forms, environmental destruction, and Orochi’s tragic backstory. Here, it’s truncated to under five minutes, skipping key beats like extended energy exchanges and Orochi’s regenerative feats. Fans on X pointed out the omissions, with one user lamenting, “They skipped sooo much from the fight… This has to be a joke or prank to us, the Fans!” Tatsumaki’s battle fares better, staying truer to the manga’s psychic frenzy, but even it loses some of Gyoro-Gyoro’s manipulative dialogue that adds layers to the villainy.
On the flip side, the episode introduces subtle tweaks for anime flow: Saitama’s monologue gripe feels more meta, poking fun at adaptation pacing itself, and King’s cameo is amplified for laughs. These changes aren’t revolutionary, but they underscore JC Staff’s shift toward humor over hyper-detailed action, a departure from Madhouse’s fluid, cinematic style. It’s efficient, but at the cost of the manga’s bombastic scale—likely a symptom of rumored production crunches and Bandai Namco’s involvement.
Animation and Production: A Step Up, But Ghosts in the Machine
If Season 3’s animation has been its Achilles’ heel—plagued by static frames, inconsistent linework, and “ghosting” artifacts from rushed compositing—Episode 12 feels like a course correction. Directed by a tag-team of Nana Fujihara and Yoshiyuki Nogami, with storyboarding by Shinpei Nagai, the episode dials up the fluidity in its action peaks. Saitama’s cape fluttering during his charge? Butter-smooth sakuga that eats budget and delivers aura. The Tatsumaki-Gyoro clash pops with vibrant psychic effects, and Orochi’s defeat packs a visceral punch (pun intended).
That said, it’s not flawless. Early scenes suffer from odd music cues—think mismatched OSTs that undercut the tension—and abrupt transitions that make the underground chaos feel disjointed. One French fan noted, “Finally a good composition with decent animation… but the ghosting ruins the render,” echoing widespread gripes about technical hiccups. Chief animation directors Shinya Hasegawa and Kazumi Ono salvage the back half, turning what could have been a dud into a “clean” sendoff, per X reactions. Overall, it’s the season’s strongest visually, scoring props for “drawings that were finally well done” amid prior episodes’ slide into mediocrity.
Sound design holds steady, with the series’ punchy SFX and JAM Project’s OP/ED unchanged. Voice acting shines—Tatsumaki’s Aoi Yūki nails the tsundere rage, and Saitama’s deadpan from Makoto Furukawa lands every zinger.
The Buzz: Community Reactions Pour In
X (formerly Twitter) lit up like a psychic explosion post-premiere, with #OnePunchMan trending globally. The verdict? Polarizing. Positives hailed the episode’s laughs—”Saitama trying to play with Pochi was funny” and “Chibi Tatsumaki is adorable”—and its relative polish, with one user crowning it “10/10… pack it up JJK.” Manga readers appreciated the Orochi one-shot as “perfect finale” fidelity, while casual viewers dug the hero ensemble beats.
Critics, however, weren’t holding back. “Underwhelming climax. They did Tatsumaki dirty 😭,” vented one account, capturing frustration over skipped content and the season’s budget woes. Spanish-speaking fans called it a “meh” wrap, griping about “ugly animation” and over-reliance on exposition. The Part 2 announcement for 2027 drew eye-rolls, with calls to “let this thing die” amid studio-hopping fatigue. Rotten Tomatoes early audience scores hover around 75%, reflecting the split: rewarding for sticking the landing, but docked for a season that never fully revved up.
Final Verdict: A Glimmer of Hope in the Rubble
Episode 12 isn’t the flawless knockout One-Punch Man deserves after years in limbo, but it’s a defiant uppercut to the chin of its own production woes. It recaptures the series’ blend of satire, spectacle, and silliness just enough to tide fans over until 2027, when JC Staff promises (or threatens) to tackle the arc’s wilder twists. If Part 2 gets the time and resources it needs—”enough time and money,” as one reviewer pleaded—it could redeem the season’s stumbles.
For now, Saitama’s still out there, one-punching boredom. And honestly? In a world of overhyped heroes, that’s the real win. Stream it now on your platform of choice, and join the debate: Redemption arc or rushed KO?
ALSO READ: Top 20 Anime Series That Started Strong But Crashed and Burned

Hello, I am a huge anime fan with a decent experience in writing articles regarding the anime industry.

