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?
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | The Strongest Man | 2015-10-06 | 25 min |
| Season 1 | Episode 2 | The Lone Cyborg | 2015-10-13 | 25 min |
| Season 1 | Episode 3 | The Obsessive Scientist | 2015-10-20 | 25 min |
| Season 1 | Episode 4 | The Modern Ninja | 2015-10-27 | 25 min |
| Season 1 | Episode 5 | The Ultimate Master | 2015-11-03 | 25 min |
| Season 1 | Episode 6 | The Terrifying City | 2015-11-10 | 25 min |
| Season 1 | Episode 7 | The Ultimate Disciple | 2015-11-17 | 25 min |
| Season 1 | Episode 8 | The Deep Sea King | 2015-11-24 | 25 min |
| Season 1 | Episode 9 | Unyielding Justice | 2015-12-01 | 25 min |
| Season 1 | Episode 10 | Unparalleled Peril | 2015-12-08 | 25 min |
| Season 1 | Episode 11 | The Dominator of the Universe | 2015-12-15 | 25 min |
| Season 1 | Episode 12 | The Strongest Hero | 2015-12-22 | 25 min |
| Season 2 | Episode 1 | Return of the Hero | 2019-04-09 | 25 min |
| Season 2 | Episode 2 | Human Monster | 2019-04-16 | 25 min |
| Season 2 | Episode 3 | The Hunt Begins | 2019-04-23 | 25 min |
| Season 2 | Episode 4 | Metal Bat | 2019-04-30 | 25 min |
| Season 2 | Episode 5 | Martial Arts Tournament | 2019-05-07 | 25 min |
| Season 2 | Episode 6 | The Uprising of the Monsters | 2019-05-14 | 25 min |
| Season 2 | Episode 7 | The Class S Heroes | 2019-05-21 | 25 min |
| Season 2 | Episode 8 | The Resistance of the Strong | 2019-05-28 | 25 min |
| Season 2 | Episode 9 | The Troubles of the Strongest | 2019-06-11 | 25 min |
| Season 2 | Episode 10 | Justice Under Siege | 2019-06-18 | 25 min |
| Season 2 | Episode 11 | The Varieties of Pride | 2019-06-25 | 25 min |
| Season 2 | Episode 12 | The Wiping of the Disciple's Butt | 2019-07-02 | 25 min |
| Camera | Yoshio Ookouchi | Director of Photography |
| Sound | Makoto Furukawa | Theme Song Performance |
| Visual Effects | Mayumi Tanahashi | Color Designer |
| Editing | Masahiro Goto | Editor |
| Sound | Shigeto Takeyama | Music Producer |
| Production | Sota Sato | Producer |
| Visual Effects | Chikara Sakurai | Opening/Ending Animation |
| Visual Effects | Yuriko Maeda | Opening/Ending Animation |
| Visual Effects | Yoshitomo Yonetani | Opening/Ending Animation |
| Visual Effects | Keiji Ishihara | Opening/Ending Animation |
| Visual Effects | Ryousuke Tanigawa | Opening/Ending Animation |
| Visual Effects | Yoshinari Ono | Opening/Ending Animation |
| Visual Effects | Yasuyuki Noda | Opening/Ending Animation |
| Visual Effects | Haruka Tanabe | Opening/Ending Animation |
| Visual Effects | Aya Akizuki | Opening/Ending Animation |
| Visual Effects | Hidetoshi Namura | Opening/Ending Animation |
| Visual Effects | Isao Sugimoto | Opening/Ending Animation |
| Visual Effects | Masakazu Takigawa | Opening/Ending Animation |
| Visual Effects | Ai Kato | Opening/Ending Animation |
| Visual Effects | Tomohiro Kamitani | Opening/Ending Animation |
| Visual Effects | Masaaki Yamamoto | Opening/Ending Animation |
| Visual Effects | Yuji Takagi | Opening/Ending Animation |
| Visual Effects | Masao Okubo | Opening/Ending Animation |
| Visual Effects | Yumi Nakayama | Opening/Ending Animation |
| Visual Effects | Kenichiro Aoki | Opening/Ending Animation |
| Visual Effects | Tsutomu Hashizume | Opening/Ending Animation |
| Visual Effects | Yuki Suzuki | Opening/Ending Animation |
| Editing | Motoki Niimi | Assistant Editor |
| Crew | Yoshihide Mukai | Special Effects |
| Sound | Takayuki Yamaguchi | Sound Mixer |
| Sound | Yasumasa Koyama | Sound Effects |
| Art | Miho Norisue | Art Designer |
| Sound | Yoshikazu Iwanami | Sound Director |
| Art | Shigemi Ikeda | Art Direction |
| Art | Yukiko Maruyama | Art Direction |
| Directing | Chikara Sakurai | Series Director |
| Sound | Mai Kawashima | Music Producer |
| Production | Chinatsu Matsui | Producer |
| Art | Shigemi Ikeda | Art Designer |
| Art | Shuichi Okubo | Art Designer |
| Art | Kayoko Tomono | Art Designer |
| Visual Effects | Chikashi Kubota | Character Designer |
| Writing | ONE | Comic Book |
| Sound | Makoto Miyazaki | Original Music Composer |
| Writing | Yusuke Murata | Comic Book |
| Writing | Tomohiro Suzuki | Series Composition |
