One-Punch Man (Japanese: ワンパンマン, Hepburn: Wanpanman) is a Japanese superhero webcomic created by the artist One in early 2009. It has a manga adaptation illustrated by Yusuke Murata, as well as an anime adaptation. Following its publication, the webcomic quickly went viral, surpassing 7.9 million hits in June 2012. One-Punch Man tells the story of Saitama, a superhero who can defeat any opponent with a single punch but seeks to find a worthy opponent after growing bored by a lack of challenge in his fight against evil.
The series' digital manga remake began publication on Shueisha's Tonari no Young Jump website in 2012. The chapters are periodically collected and printed into tankōbon volumes. As of November 2019, 20 volumes have been released, 17 of which have been republished in English. Viz Media has licensed the remake for English serialization in its Weekly Shonen Jump digital magazine. Its English release received a nomination for an Eisner Award in 2015 and a Harvey Award in 2016.
An anime television adaptation by Madhouse aired in Japan between October and December 2015. It was dubbed in English during the summer of 2016, and later that year a planned second season was announced. On September 25, 2017, it was announced the production company and director had changed. The second season was animated by J.C.Staff with Chikara Sakurai replacing Shingo Natsume as director and Yoshikazu Iwanami replacing Shoji Hata as sound director. The second season aired between April and July 2019.