The animated movie KPop: Demon Hunters, from Netflix, presented viewers with a glamorous, risky, and charismatic boy band, the Saja Boys. They appear on the surface as an ideal K-pop idol, with beautiful looks, catchy tunes, and mass hype. Under such a refined surface, though, is the core menace of the film. The Kpop Demon Hunters Saja boys are not only opponents of the heroine group HUNTR/X, but also demons with a well-developed strategy to consume fan loyalty and destroy the balance of magic that defends the world.
This guide discusses who the Saja Boys are, why they are relevant to the story, and how everyone in the group works towards the disturbing appeal the group has.
Quick Bio Table: Saja Boys Members
| Jinu | Leader, Main Vocalist, Center | Fallen Idol | Human-turned-demon, calm authority | Vocals by Andrew Choi |
| Mystery | Vocalist | Silent Prince | Aloof, emotionally distant | Vocals by Kevin Woo |
| Abby (Abs) | Vocalist, Rapper, Dancer | Party Instigator | Chaotic energy, strawberry soda motif | Vocals by Neckwav |
| Romance | Vocalist | Casanova | Charming and manipulative | Vocals by samUIL Lee, English voice by Joel Kim Booster |
| Baby | Rapper, Dancer, Maknae | Cute Wildcard | Playful yet intimidating rap tone | Deep rap vocals (uncredited) |
Concept Behind Saja Boys: Idols Designed to Deceive

The Saja Boys are a fictional boy group of five K-pop musicians engineered to specifically challenge traditional idol narratives. They do not use brute force or chaos like the usual villains. Rather, they use the culture of fandom as a weapon. Their music, images, and well-sustained personalities enable them to drain emotional energy out of their fans and dilute the Honmoon, a mystical barrier that traps the demon king Gwi-Ma.
Their first single, called Soda Pop, is released in the film on June 20, 2025, and becomes an instant hit in the movie’s world. What is all the more interesting is that their ascension is quite similar to the real-life success stories of K-pop idols, which makes it difficult to distinguish between breaking the fourth wall and commenting on the obsession with idols, the focus on perfection, and the obsession with emotions.
Jinu: The Leader Who Walks Between Humanity and Darkness

In the line-up of the Saja Boys members, Jinu, the group leader, lead vocalist, and visual center are at the center. Jinu’s backstory is a vital element for appreciating the emotional richness of the group. It turned him into a demon after he was already human, and he still has a residual attachment to humanity, which comes through at various moments throughout the film.
His character is cool, reserved, and unemotional but his acting is full of desire. Symbolically linked to the taste of a blueberry soda, Jinu is a symbol of cool perfection hiding conflict within. In the vocal department, he heads the group with polished, emotionally charged vocals, and he is the main person fans and enemies alike are drawn to.
Mystery: The Quiet Presence That Keeps Fans Guessing

Mystery is an ingredient in the traditional archetype of a silent idol, commonly known as the Napping Prince of the group. His speech is weak; he seems non-committal and exudes tranquil non-cooperation. It is this indifference that is his most powerful weapon. The fans project their feelings onto him, making them commit even more to him without their conscience.
In the story, Mystery represents emotional avoidance and passive control. He does not require special moves or an act; his silent presence reinforces the group’s grip on its audience and proves to the world that silence is as effective as spectacle.
Abby (Abs): Chaos, Charm, and Unfiltered Energy

If Mystery is a silent power, the Abby or Abs is a dynamite personality. Abby is a vocalist, dancer and rapper who favors the havoc. His image as a bright and party-loving person is reflected in his strawberry soda motif, yet that sweetness conceals something explosive.
Disruption is the role of Abby in KPop Demon Hunters Saja Boys. In this stage, he is unpredictable and electric. In the background, he is an impulsive person who causes friction even with the group. He has the charm of too-real idols of seductive threat, and he draws his fans closer with his brash power rather than idealism.
Romance: The Casanova With a Calculated Smile

Romance inclines itself all to charm. His flirtatiousness and easy vocals are to play the role of the heartthrob who cannot resist. His call is calculated and planned, aiming to involve fans and keep them engaged.
Throughout its narrative, Romance is an emotion manipulation in the form of affection. He is fully aware of what the fans would like to hear and how to provide it. This positions him among the most efficient at sucking fan loyalty, which promotes film criticism of parasocial relations.
Baby: Cute, Chaos and Surprisingly Dangerous

As the youngest member and maknae, Baby’s first impression seems innocent. It is his friendly demeanor and adorable graphics that bring down the barriers, yet his bassy rap voice and violent style of acting soon reverse those expectations.
The role of Baby brings out the weakness of being underestimated. He is a contrast person, going from cute to threatening within seconds. He is the Saja Boys who reminds the members that danger does not necessarily appear threatening.
Why Saja Boys Matter in KPop: Demon Hunters
The Saja Boys cannot be considered pure villains; they are a literary device that allows for a deeper exploration of the more sinister aspects of idol culture. They not only compete with HUNTR/X in music, but also in ideology. The performance employed to secure and empower in HUNTR/X is used to manipulate their adoration and annihilate in the case of the Saja Boys.
Their lives raise uncomfortable questions about fame, identity, and the ease of admiration when genuineness is replaced by illusion.
FAQs About Saja Boys
1. Are the Saja Boys a real K-pop group?
No, the Saja Boys are fictional characters created for Netflix’s KPop: Demon Hunters.
2. How many members are in the Saja Boys?
The group consists of five members: Jinu, Mystery, Abby, Romance, and Baby.
3. What is the role of Saja Boys in the film?
They serve as the main antagonists, using idol fame to weaken a magical barrier and aid the demon king Gwi-Ma.
4. What song made Saja Boys famous in the story?
Their debut hit single is “Soda Pop.”
5. Do Saja Boys symbolize something deeper?
Yes, they represent the darker side of idol culture, including manipulation, obsession, and parasocial relationships.

