Episode 12: “The Strongest Hero”
- 12 of 12
- December 20, 2015
- 24 min
- Aired
Contents
| Series | One-Punch Man |
|---|---|
| Episode | 12 of 12 |
| Japanese | 最強のヒーロー |
| Original air date | December 20, 2015 |
| Episode length | 24 min |
| Studio | Madhouse |
| Previous episode | Episode 11: “The Dominator of the Universe” |
| Streaming | Crunchyroll, Netflix, Hulu, Tubi |
“The Strongest Hero” is episode 12 of the anime One-Punch Man. It first aired on December 20, 2015.
Summary
The summary below describes what happens in this episode.
Lord Boros travels across the universe in search of an opponent capable of ending his boredom and encounters Saitama. Their battle unfolds while humanity's fate is at stake, bringing the two powerful fighters into direct conflict.
Characters in this episode
Music in this episode
- ED 2“Kanashimi-tachi wo Dakishimete” — Hiroko MoriguchiAnimeThemes
Where to watch
Streaming services that list One-Punch Man. What you can watch depends on your country. Acino does not host any video; each link leads to the service's own page.
Episode guide
All 12 episodes → · 12 of 12 episodes have a summary
About the series
A superhero comedy follows Saitama, whose overwhelming strength lets him defeat any opponent with a single punch. The story’s central tension comes from the very ease of his victories: the hero he once hoped to become now struggles to find excitement in battle, until a young cyborg enters his life.
Read the article →References
- “One-Punch Man”. Kitsu. Retrieved October 22, 2026.
- “One Punch Man”. MyAnimeList. Retrieved October 27, 2026.
- “One-Punch Man”. AnimeThemes. Retrieved October 23, 2026.
Episode titles and air dates come from Kitsu. The summary is written by Acino with AI assistance and checked so that it does not copy other sites.