KPop Demon Hunters: The Real Singing Voices Behind Saja Boys Surprise Fans; See Full List

The Netflix animated film KPop Demon Hunters has become a global hit since its release on June 20, 2025. The movie follows a K-pop girl group, HUNTR/X, who secretly fight demons while maintaining their idol careers. Their rivals, the Saja Boys, are demons disguised as a popular boy band.

While the characters are voiced by talented actors, the singing voices behind the Saja Boys have shocked fans. The lineup includes well-known K-pop producers, soloists, and even a Broadway star. Here’s a breakdown of the real artists behind the animated boy group.

Who Voices the Saja Boys in KPop Demon Hunters?

1. Jinu (Leader) – Andrew Choi

• Voice Actor: Ahn Hyo-seop (his first voice-acting role).
• Singing Voice: Andrew Choi, a singer and composer under SM Entertainment. He is known for competing in K-Pop Star Season 2 and composing for artists like NCT 127, SHINee’s Taemin, and Monsta X.

1. Abs Saja – NECKWAV

• Voice Actor: Sungwon Cho.
• Singing Voice: NECKWAV, an R&B and soul artist with several solo tracks.

1. Romance Saja – samUIL Lee

• Voice Actor: Joel Kim Booster.
• Singing Voice: samUIL Lee, previously known as Taebot, a rising singer in the K-pop scene.

1. Baby Saja – Danny Chung

• Voice Actor: Not credited.
• Singing Voice: Danny Chung, a songwriter under THEBLACKLABEL. He has written lyrics for BLACKPINK, Jeon Somi, and more.

1. Mystery Saja – Kevin Woo

• Voice Actor: Alan Lee.
• Singing Voice: Kevin Woo, former member of U-KISS and Broadway star. He debuted as a solo artist in the U.S. and starred in the musical KPOP on Broadway.

Fan Reactions to the Singing Cast

Netizens were surprised by the high-profile talent behind the Saja Boys. Many praised the film’s music team for bringing together such skilled vocalists.

“These are the people who sang, right? Crazy, no wonder the songs were insanely good. They gathered producer-level talents for this.”

“Wait, Kevin from U-KISS??? Wow, everyone’s voices sound amazing…”

“Andrew Choi—is that the same guy from K-Pop Star?”

About KPop Demon Hunters

The film blends K-pop, action, and fantasy, featuring original songs produced by top music creators like Teddy Park (BLACKPINK’s producer), Lindgren (BTS, TWICE), and Jenna Andrews (BTS, Drake). The soundtrack includes tracks like “How It’s Done,” “Soda Pop,” and “Takedown.”

The Saja Boys perform “Soda Pop,” a bubbly but sinister track where the lyrics hint at their demonic nature. The song was produced by 24, DOMINSUK, and Ian Eisendrath, blending catchy beats with dark undertones.

Why the Casting Choices Stand Out

• Andrew Choi and Kevin Woo bring real K-pop experience, making the animated group feel authentic.
• Danny Chung’s songwriting background adds depth to the character’s vocals.
• NECKWAV and samUIL Lee provide fresh, dynamic voices that fit the group’s energetic performances.

The film’s music producer, Ian Eisendrath, explained:
“We wanted the Saja Boys to sound like a real K-pop group—charismatic, polished, but with a hidden edge. The singers we chose brought that duality perfectly.”

Where to Watch and Listen

• KPop Demon Hunters is streaming on Netflix.
• The soundtrack is available on major music platforms, featuring songs by TWICE, EXO, EJAE, and more.

Fans can expect more behind-the-scenes details as the film continues trending worldwide.

Also Read: Kpop Demon Hunters: 7 Hidden References to BTS, Business Proposal and More You Might Have Missed

Credits: Sources include Netflix Tudum, Genius, and IMDb.

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