One-Punch Man Season 3 Episode 12 Release Date

Episode 12 of One-Punch Man Season 3 is scheduled to air on December 28, 2025. This installment serves as the epic season finale, following the immediate and anticlimactic defeat of the Monster King in Episode 11. The entire focus now shifts to the true antagonist of the arc: Garou, the Hero Hunter, who has fully transformed and poses an unprecedented threat.

This episode is dedicated to The Final Confrontation: Saitama vs. Garou and the dramatic conclusion of the Monster Association Arc. The episode will balance Garou’s desire for existential conflict with Saitama’s signature detachment, leading to the highly anticipated climatic showdown.

Where to Watch One-Punch Man Season 3 Episode 12 Online

You can stream One-Punch Man Season 3 on the following major international platforms. New episodes typically air every Sunday in Japan.

Where to Watch

Crunchyroll [Crunchyroll – Official Listing] (Available in most regions including Europe)
Hulu [Hulu – Official Listing] (Streaming platform in the U.S.)
Disney+ [Disney+ – Official Listing] (Streaming platform in Canada)

The episode is expected to premiere in Japan (JST) at approximately 11:45 PM. Global streaming times will be adjusted accordingly for other regions.

What Happens in Episode 12

Episode 12 is projected to deliver the season’s core emotional and action climax, setting up future arcs:

Garou’s Final Transformation: Garou reaches his peak monsterization form, a visually stunning and terrifying display of power. He confronts Saitama, viewing him as the ultimate embodiment of the ‘Hero’ ideal he seeks to destroy.

Saitama vs. Garou: The Philosophy Duel: The core of the fight will not be pure strength but a clash of philosophies. Garou desperately seeks a definitive, powerful fight that validates his existence, while Saitama simply responds to the attack without taking the fight seriously.

The Serious Punches: The fight will feature some of the most dynamic and visually intricate animation of the season, showcasing Garou’s highly complex martial arts against Saitama’s effortless, yet devastating, “Serious” moves.

The Emotional Resolution: The episode will likely conclude with the physical end of the fight (Garou’s defeat) but also the emotional preservation of Garou’s humanity, showing that Saitama understands Garou’s true desires were never purely villainous.

The Aftermath: A brief final scene showing the immediate aftermath of the war and the recovery of the S-Class Heroes and the city, setting the stage for Season 4.

The episode delivers the ultimate hero-vs-anti-hero confrontation, providing both epic action and profound character commentary.

Why You Shouldn’t Miss Episode 12

Episode 12 is the definitive, climactic installment of the entire Monster Association Arc. It’s the perfect blend of unparalleled martial arts, existential drama, and emotional closure for the most compelling antagonist of the series.

Fans will highly value Episode 12 for the stunning, extended battle sequence between Saitama and Garou, the emotional depth of Garou’s downfall, and the ultimate satisfaction of seeing the arc resolved by the series’ ultimate hero.

This episode is the reason the entire season exists—it is the peak of the Monster Association storyline.

💬 My Personal Take:

“Episode 12 must nail the Saitama vs. Garou dynamic. It’s not about raw power (we know Saitama wins), but about the beauty of Garou’s complex martial arts being effortlessly countered by Saitama’s simplicity. If the animation studio pours all its resources into this final battle, it will easily be the most memorable episode of the season.”