He is back.
After severing ties with his gang, a former gangster returns to uncover the truth behind his brother's death — embarking on a relentless path of revenge.
Mercy for None (2025) is a action & adventure and drama series that premiered on June 6, 2025, spanning 1 season and 7 episodes. It stars So Ji-sub, Huh Joon-ho, Gong Myoung and Choo Young-woo. Viewers rate it 7.9 out of 10 across 191 ratings.
Watch the official trailer for Mercy for None before you start streaming.
Official trailers, teasers, clips and featurettes for Mercy for None.
Trailer
Teaser
Clip
So Ji-sub
as Nam Gi-jun
Huh Joon-ho
as Lee Joo-woon
Gong Myoung
as Gu Jun-mo
Choo Young-woo
as Lee Geum-son
An Kil-kang
as Koo Bong-san
Cho Han-chul
as Choi Seong-chul
Lee Jun-hyuk
as Nam Gi-seok
Cha Seung-won
as Cha Young-do
Lee Beom-soo
as Sim Seong-won
Jung Gun-joo
as Cheon Hae-beom
Lee Jung-hoon
as Joo-woon's gang member
Average viewer score of 7.9/10 from 191 ratings.
I'm actually quite surprised this series was produced by Netflix. Its certainly not the standard fare, I've come to expect from them. "Mercy for None" is your typical, gritty, South Korean organised crime drama, on steroids. This is wall to wall unrelenting action, with a seemingly endless stream of well choreographed fights, delivered in bloody style, by a key character, who feels unstoppable. Like many Korean…
Reviewed on June 7, 2025
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Mercy for None (2025) is available to stream on Netflix and Netflix Standard with Ads. Availability comes from JustWatch data and varies by country.
Mercy for None has 1 season and 7 episodes in total, starting from its premiere on June 6, 2025.
No. Mercy for None is marked as ended, with the final episode airing on June 6, 2025.
Mercy for None (2025) stars So Ji-sub, Huh Joon-ho, Gong Myoung, Choo Young-woo and An Kil-kang. The full cast list with character names is available in the cast section of this page.
Mercy for None (2025) is rated 7.9 out of 10 from 191 viewer votes, and suits viewers who like action & adventure and drama series. Reviews from viewers are collected further down this page.
The official Mercy for None trailer is embedded in the trailer section of this page and plays instantly in your browser.
