One Punch Man Season 3 Part 2 is coming soon, and there's nothing anyone can do about it. The first half of the third season ended on December 28 with 12 episodes that left fans hanging right in the middle of a fight with the Monster Association Arc, but Bandai Namco Filmworks wasted no time breaking the news to the community; they got hit harder than a KO punch from Saitama.
With the split-cour structure, J.C. Staff has a chance for redemption in 2027. The new teaser video gives us our first glimpse into the upcoming battle between Saitama and Garou (in the Cosmic Fear form) that readers have been looking forward to seeing animated for years.

After waiting 6 years for Part 1 to come back (which aired from October through December of 2025), we'll have a much shorter wait this time around, which might mean that the studio wants to keep the hype going, or there could also be some worries about the animation quality, so they're trying to get it out quicker.
It looks like Summer 2027 might be when you'll see One Punch Man Season 3 Part 2, based on how seasonal anime seasons usually are. But that condensed time frame brought to light how many problems had occurred with Part 1 in terms of technical troubles. Will the anime studio be able to clean up those issues by Summer 2027?
Production Team Remains Unchanged

J.C. Staff will carry on with producing animation for One Punch Man Season 3 Part 2, just like season 2 and season 1 Part 1. J.C. Staff will also have the same directors as before, who are Shinpei Nagai (director) and Tomohiro Suzuki (series composition writer).
As for character design, the character designs again will have three artists: Chikashi Kubota, Shinjiro Kuroda, and Ryosuke Shirakawa.
Sakura Murakami will supervise art direction, and Yuki Hirose will handle the cinematography. Makoto Miyazaki will again compose the music, while Masahiro Goto will be the editor, and Yoshikazu Iwanami will direct the sound design.
Voice Cast Returns in One Punch Man Season 3 Part 2

The original main cast from One Punch Man season 1 will be returning for season 3, part 2. We have got Makoto Furukawa playing Saitama and Kaito Ishikawa playing Genos. The S-Class Heroes are back, too! Aoi Yuki is returning as Terrible Tornado, Kazuhiro Yamaji will voice Silverfang, and Kenjiro Tsuda is going to be the voice for Atomic Samurai.
The returning supporting cast members will include Minami Takayama as Child Emperor, Hiroki Yasumoto as King, Takahiro Sakurai as Zombieman, and Kosuke Toriumi as Flashy Flash. All of these actors really bring life to the massive group of heroes fighting against the Monster Association.
What to Expect Story-Wise
One Punch Man Season 3 Part 2 is going to bring the climax that fans have been waiting for. The teaser video puts an emphasis on Supreme Power vs Ultimate Fear, a direct nod to Garou’s ultimate change, a monumental battle within the manga, and likely the best fight of the series; the final battle of the Monster Association Arc has action-packed sequences as well as defining moments for the characters.
One Punch Man Season 3 Part 2 is going to adapt material that has been consistently ranked as one of the best story arcs in the manga by manga readers, but this battle between Saitama and Cosmic Fear Garou pushes the narrative and visual limits of the manga.