Netflix’s smash hit “KPop Demon Hunters” pulled in fans worldwide — even people who’d never heard of K-pop. Wondering “Who are the characters?”, “Who are the Saja Boys?”, or “Who voices Rumi and Zoey?” This guide breaks down the full character lineup and relationships for both groups, so you can enjoy the film’s story and details so much more.
What is KPop Demon Hunters? The basics
For viewers new to the film, here’s the rundown. “KPop Demon Hunters” is an animated movie that premiered on Netflix on June 20, 2025, directed by Maggie Kang and Chris Appelhans. It became a worldwide phenomenon, drawing in audiences far beyond existing K-pop fans.
The story’s hook is a dual identity: on the surface they’re a wildly popular K-pop girl group, but in secret they’re a trio of demon hunters. Their singing has the power to maintain the “Honmun,” a barrier that protects the human world from demons. Then a boy group of demons disguised as humans appears, and the two sides battle for fans’ hearts. In other words, it fuses an “idol story” with “demon-slaying action” — making it easy to enjoy even for K-pop beginners.
Character lineup and relationships: the two groups
The characters split mainly into two groups: the heroines “HUNTR/X” and the villains “Saja Boys.” Let’s map out the relationships first.
At the center is HUNTR/X, the demon-hunting girl group, set against Saja Boys, the demon boy group that targets them. The core of the story is the tension — and the fight for fans — between these two groups. Once you grasp this “heroes vs. villains, both disguised as idols” structure, the whole film clicks into place.
| Character | Role | Speaking / Singing voice |
|---|---|---|
| Rumi | Leader / main vocal | Arden Cho (speaking) / EJAE (singing) |
| Mira | Main dancer | May Hong (speaking) / Audrey Nuna (singing) |
| Zoey | Rapper / lyricist / maknae (youngest) | Ji-young Yoo (speaking) / Rei Ami (singing) |
| Character | Speaking / Singing voice |
|---|---|
| Jinu (leader) | Ahn Hyo-seop (speaking) / Andrew Choi (singing) |
| Romance Saja | Joel Kim Booster (speaking) / Samuil Lee (singing) |
| Mystery Saja | Alan Lee (speaking) / Kevin Woo (singing) |
| Abby Saja | SungWon Cho (ProZD) (speaking) / Neckwav (singing) |
The lineup pairs HUNTR/X’s three members against the Saja Boys, led by Jinu. Note the structure of the cast: most characters have a different actor for speaking and for singing. That’s a deliberate choice — top vocalists handle the songs while screen actors handle the dialogue, which is why the musical numbers sound so polished.
Fan deep-dive: how to find your bias and pronounce the names
For fans diving in, here’s how to pick a favorite. On the HUNTR/X side, Rumi is the leader and main vocal, Mira the cool main dancer, and Zoey the witty rapper and youngest. On the Saja Boys side, Jinu the leader stands out, voiced (in dialogue) by actor Ahn Hyo-seop, who is well known from Korean dramas. The other Saja members — Romance, Mystery, Abby, and Baby Saja — each have distinct personalities.
A fun layer for music fans: because singing voices differ from speaking voices, the soundtrack features a stacked roster of vocalists (EJAE, Audrey Nuna, Rei Ami, and more). If you loved a song, checking who actually sang it is a great way to discover new artists — and a natural entry point into K-pop itself.
Summary: remember it as two groups plus the rivalry
“KPop Demon Hunters” centers on the demon-hunting girl group HUNTR/X (Rumi, Mira, Zoey) versus the demon boy group Saja Boys (led by Jinu). Keep in mind that speaking and singing voices are cast separately, and the whole film becomes easier to follow. Pick a bias, learn who sang your favorite track, and the world of the movie opens up. Want more? Check out our breakdown of the film’s soundtrack and the Japanese voice cast as well.
Source: Netflix, “KPop Demon Hunters” (retrieved 2026-06-22)
