Table of Contents
Here’s the headline: “Hero Killer,” one of Naver WEBTOON’s biggest action hits, is becoming an animated TV series. French studio Passion Paris unveiled the adaptation on June 26, 2026, at the Annecy International Animation Film Festival — the festival where the animation industry’s biggest reveals happen. If you haven’t heard of “Hero Killer” yet, you’re about to.
The Numbers Do the Talking
You don’t greenlight a random webtoon for international animation. Checking “Hero Killer’s” page on WEBTOON’s global platform directly on June 29, 2026: the series has racked up 111.5 million total views and 1.1 million subscribers, with new episodes still landing weekly — episode 269 went up on June 24, 2026. The official adaptation announcement, distributed via Anime News Network on June 27, 2026, cites a similar scale: the webtoon is “available in ten languages worldwide” with “more than 250 published episodes.” Both numbers point the same direction — this isn’t a passion-project pickup, it’s a flagship title getting the adaptation treatment its readership already earned.
Who’s Behind It
Direction goes to David Pagaille, previously known for “Moonlit Bamboo Forest” (2024), an animated short set in the Genshin Impact universe that earned a nomination at the 2025 Annie Awards, according to the project’s official press materials. Pagaille cited “the richness of its world and the complexity of its characters” as what drew him to “Hero Killer.” Passion Paris’s managing director, Caroline Audebert, described the project as an emotionally charged story built around a strong central heroine, while Bastien Guetta, Head of Content Development at the European animation streamer ADN (Animation Digital Network) — Passion Paris’s partner on the project — framed the deal as bringing a major Korean webtoon to animation through a partnership spanning Korea, France, and beyond.
The Story, for Anyone Catching Up
What’s Still Missing
No premiere date. No confirmed streaming home yet. No animation studio credited beyond Passion Paris. What we do have: a freshly unveiled teaser illustration from original creators Kkulbeol and Beolkkul, plus brand-new official channels — a website (herokiller-anime.com), an X account (@HeroKillerAnime), and an Instagram account (@herokilleranime) — that went live alongside the announcement. Annecy was the unveiling, not the premiere. Treat this as the opening notice, not the release date.
Bottom Line
“Hero Killer” spent five years building one of WEBTOON’s most loyal followings the slow way — one Friday release at a time. Now it’s getting the adaptation treatment that international action hits usually get. If the anime captures even half of what made the webtoon work, this is the next K-webtoon-to-screen story worth watching.
Sources: “Hit Webtoon Hero Killer to Receive Animated TV Series Adaptation,” official press release distributed via Anime News Network, published June 27, 2026; WEBTOON.com official series page for “Hero Killer,” checked directly June 29, 2026; 히어로 킬러(웹툰) entry, Namu Wiki, checked June 29, 2026.
