One-Punch Man Season 3 — What We Know So Far

One-Punch Man Season 3 is set to premiere on October 5, 2025. Wikipedia+2GamesRadar++2
This comes after a long wait—the second season ended in July 2019, so it's been almost six years without new anime for the series. Hindustan Times+2Wikipedia+2
The timing is significant: 2025 marks the 10th anniversary of when the first season aired (October 2015), and the announcement emphasizes that the new season will debut in that anniversary year. Wikipedia+3The Times of India+3The Economic Times+3

Animation Studio: J.C. Staff has been confirmed to produce Season 3. Wikipedia+2Hindustan Times+2
Director: Shinpei Nagai takes over as director, replacing Chikara Sakurai. Wikipedia
Art Direction & Other Staff:
- Art Director is Sakura Murakami. Wikipedia
- Director of Photography will be Yuki Hirose. Wikipedia
- Series composition returns to Tomohiro Suzuki. AnimeTV チェーン+1
- Character design will include Chikashi Kubota, Shinjiro Kuroda, and Ryosuke Shirahawa. AnimeTV チェーン+2India Today Gaming+2
- Music (score) by Makoto Miyazaki. AnimeTV チェーン+2India Today Gaming+2
Voice Cast: Many of the main cast are reprising their roles:
- Makoto Furukawa as Saitama Wikipedia+2AnimeTV チェーン+2
- Hikaru Midorikawa as Garou Wikipedia
- The rest of the cast includes returning favorites like Aoi Yuki, etc. AnimeTV チェーン+1

The upcoming season will adapt the Monster Association arc, one of the most intense, dramatic, and popular arcs in the One-Punch Man manga. India Today Gaming+3The GWW+3AnimeNextSeason+3
Key plot points expected: conflict between the Hero Association and the Monster Association, major battles, the evolution of characters like Garou, and new threats emerging. AnimeNextSeason+2India Today Gaming+2

🔎 Fan Expectations & Concerns

While fans are excited, there are some mixed feelings and worries—fair enough given the long gap and high expectations.

Animation Quality:
There’s buzz and concern surrounding whether Season 3 can live up to the bar set by Season 1. A short commercial/trailer released earlier showed some static visuals, which led to criticism that the production might not match earlier visual dynamism. GamesRadar+
Studio Change Impacts:
Season 1 was produced by Madhouse and is still praised for its fluid animation and fight choreography. The new seasons, under J.C. Staff, had mixed reception, particularly Season 2, which many felt dropped in animation quality. Fans will be watching closely whether JC Staff improves or regresses. GamesRadar++1
High Stakes for the Monster Association Arc:
Because this arc is beloved and full of large-scale battles, character development, and dramatic tension, there's pressure for a strong adaptation. Animating monster designs, action scenes, and emotional beats will be challenging—especially after a long wait.

The opening theme for Season 3 is titled “Get No Satisfied!” by JAM Project featuring BABYMETAL. Wikipedia+1
The ending theme will be performed by Makoto Furukawa. Wikipedia

The October 5, 2025 premiere gives fans a target date—so the lead-up phase (trailers, visuals, character reveals) will matter a lot. Each reveal will be scrutinized.
If the season can balance strong action, great design, plus the humor and satire that One-Punch Man is known for, it can recapture fans who were disappointed with the drop-off in Season 2.
Also interesting: as the manga has continued beyond the Monster Association arc, how far the season chooses to adapt (where to draw the line) will be significant.