One-Punch Man - Season 1 - Eps 4: The Modern Ninja
A group of battlesuit-clad terrorists called “The Paradisers” appears in City F, led by an enormous man known as Hammerhead. Calling for the redistribution of wealth, the group targets the fat-cat Zeniru, who in turn dispatches his bodyguard to defeat them. Unfortunately, Saitama is on the same errand.
About One-Punch Man

Title: One-Punch Man
First Air Date: 2015-10-05
Last Air Date: 2019-07-03
Status: Returning Series
Rating: 8.4/10 (from 3665 votes)
Language: JA
Seasons: 4
Total Episodes: 24
Network: TV Tokyo TV Aichi TV Osaka
Genres: Animation, Comedy, Action & Adventure
Production Companies: Madhouse, J.C.STAFF, Bandai Visual, Asatsu-DK, jeki, Shueisha, Lantis, Banpresto, Good Smile Company, TV Tokyo
Synopsis
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?
Cast

Makoto Furukawa
Saitama (voice)

Kaito Ishikawa
Genos (voice)

Hiroki Yasumoto
King (voice)

Kazuhiro Yamaji
Silverfang (voice)

Yuichi Nakamura
License-less Rider (voice)

Kenjiro Tsuda
Atomic Samurai (voice)

Aoi Yuki
Terrible Tornado (voice)

Saori Hayami
Hellish Blizzard (voice)

Hikaru Midorikawa
Garou (voice)