Who Are the Real Faces Behind ‘KPOP Demon Hunters’ Saja Boys?! Cast, Voice Actors, Inspirations Fully Explained!

The hit Netflix animation “KPOP Demon Hunters” features a dazzling rival boy group, The Saja Boys. But who are their real-life inspirations? Discover the voice actors, K-pop idols, models, and singers behind the characters—including Ahn Hyo-seop, Kevin Woo, and Lee Byung-hun. Plus, we dive into OST highlights and Season 2 teasers!

 

 

Table of Contents 1. What Is “KPOP Demon Hunters”? 2. Who Are the Saja Boys? 3. Members of the Saja Boys & Their Real-Life Inspirations 4. Voice Cast & OST Artists Breakdown 5. What Makes Saja Boys So Popular? 6. Post-Credit Scene & Season 2 Foreshadowing 7. Final Verdict: A Cultural Mashup Masterpiece

 

 

1. What Is “KPOP Demon Hunters”?

Released on Netflix in June 2025, KPOP Demon Hunters is a groundbreaking fantasy-action animation produced by Sony Pictures Animation.

 

It follows the story of global K-pop girl group Huntrix—Lumi, Mira, and Joy—who are not just idols but also demon hunters. They fight to protect the Honmoon, a spiritual shield that protects fans’ souls from being devoured by evil forces.

 

The story intensifies when they face off against the mysterious and dangerously seductive boy group, The Saja Boys, who aim to shatter the Honmoon by stealing fans’ energy during performances.

 

 

 

 

2. Who Are the Saja Boys?

The Saja Boys aren’t your typical rival group. They’re demons disguised as idols, under the control of the demon king Gwima.

 

They hold high-profile concerts, luring in fans and draining their emotional energy to fuel evil.

The group is a fantasy blend inspired by real-life K-pop boy bands such as:

 

▪️BTS

▪️TXT

▪️Stray Kids

▪️ATEEZ

▪️BIGBANG

▪️MONSTA X

 

Their design and performance style mirror real K-pop culture, including flashy visuals, synchronized choreography, and fan service.

 

 

 

 

3. Members of the Saja Boys & Their Real-Life Inspirations

① JINU – Leader, Main Antagonist

 

▪️Voice Actor: Ahn Hyo-seop

▪️Singing Voice: Andrew Choi

▪️Visual Inspirations: Cha Eun-woo, Nam Joo-hyuk

▪️Character Lore: Once a poor musician, he made a deal with Gwima in exchange for fame—losing his humanity. A tragic hero figure, he falls for Lumi and ultimately sacrifices himself to save her.

 

 

 

② ABBEY – The Powerhouse

 

▪️Voice Actor: Cho Sung-won

▪️Singing Voice: Neckwav

▪️Concept: Muscular, stoic, but secretly soft-hearted. Famous for signing fans’ stomachs at fan events.

 

 

 

③ BABY – Visual Maknae

 

▪️Singing Voice: Danny Chung (THE BLACKLABEL)

▪️Inspiration: BTS Jimin’s gestures and visuals

▪️Concept: Adorably boyish visuals paired with a deep-voiced rapper persona—pure gap moe appeal.

 

 

 

④ MYSTERY – The Enigma

 

▪️Voice Actor: Alan Lee

▪️Singing Voice: Kevin Woo (former U-KISS)

▪️Concept: Always covers his face. Has a secret connection with Huntrix member Joy.

 

 

 

⑤ ROMANCE – The Sweetheart

 

▪️Voice Actor: Joel Kim Booster

▪️Singing Voice: samUIL Lee

▪️Concept: As his name suggests, he’s all about heart-fluttering charm and poetic energy.

 

 

 

 

4. Voice Cast & OST Artists Breakdown

Character	Voice Actor	Singing Voice
Lumi	Arden Cho	EJAE
Jinu	Ahn Hyo-seop	Andrew Choi
Gwima	Lee Byung-hun	Both voice & vocals
Mira	Mei Hong	-
Joy	Yoo Ji-young	-
Manager Bobby	Ken Jeong	-
Healer (Herbalist)	Daniel Dae Kim	-

 

 

🎵 OST Highlights:

 

▪️“Takedown” – Sung by TWICE’s Jeongyeon, Jihyo, and Chaeyoung

▪️“Soda Pop” – Saja Boys’ addictive theme song

▪️“Golden” – Lumi’s emotional solo

▪️“Your Idol” – Broke into Spotify’s global K-pop Top 10

 

 

 

 

5. What Makes Saja Boys So Popular?

 

✔️ Stunning Stage Direction: Live performances are animated like real K-pop concerts.

✔️ Cultural Details: Kimchi, herbal medicine clinics, hanbok, tigers from Korean folk art—it's all there.

✔️ K-pop Accuracy: Fan chants, slogans, light sticks, idol fandom behavior.

✔️ Meta Humor: Galaxy smartphone PPL? Yes. K-pop inside jokes? Yes.

 

 

6. Post-Credit Scene & Season 2 Foreshadowing

“The Honmoon is still open.”

 

The post-credit scene features a creepy Saja Boys plush glowing red at Namsan Tower—with haunting laughter.

 

💡Other clues include:

▪️Jinu’s spirit not fully gone

▪️Lumi’s hand mark glowing again

▪️Ancient Joseon-era scrolls connected to her bloodline

▪️Manager Bobby’s suspicious behavior

 

This heavily hints at a possible Season 2, and fans are already speculating like crazy.

 

 

 

 

7. Final Verdict: A Cultural Mashup Masterpiece

 

K-POP Demon Hunters isn’t just for anime fans—it’s for K-pop stans, fantasy lovers, and anyone who enjoys stylish, action-packed storytelling. The Saja Boys, though villains, have quickly become breakout stars of the show. Their tragic backstories, addictive music, and unforgettable performances have carved a space in fandom hearts everywhere.

 

👤“Did Jinu really disappear?”
👤“What is Lumi’s true destiny?”
👤“Will the Saja Boys return stronger?”

 

These are just some of the questions fans are left pondering. So if you haven’t watched it yet, consider this your sign. And if you have? Maybe it’s time for a rewatch—because the Honmoon is still open.

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