Acid Angel from Asia Member Profiles 2026

Acid Angel from Asia (애시드 엔젤 프롬 에이시아), also known as AAA or tripleS AAA, is the bold K-pop sub-unit that kicked off one of the most ambitious fan-driven projects in the Korean pop music world. If you love learning about K-pop girl group members, their backgrounds, and the stories behind their rise, you’re in the right place. In this guide, we cover everything – the Acid Angel from Asia member profiles, their fun facts, achievements, discography, and live performances, all in one place.

Whether you’re a longtime fan of tripleS or just discovering AAA K-pop, let’s get into it.

---

Band Information

Acid Angel from Asia burst onto the scene on October 28, 2022, as the very first sub-unit of the 24-member tripleS girl group, formed under the Seoul-based label MODHAUS. What makes this group truly special is how it was created – instead of a label just picking members, fans voted on who would be in the lineup through the Cosmo app, making this one of the most interactive fan-participating K-pop debuts ever. The unit was labeled as DIMENSION A during the “Grand Gravity” – tripleS’ first fan-voting event – which shows just how connected the group is to its fanbase.

The name itself says a lot. “Acid Angel from Asia” is a reference to Gen Z youth culture in Asia, and the group’s sound and aesthetic reflect exactly that – sharp, electric, and deeply relatable to young audiences across the globe.

---

The Acid Angel from Asia Member Profiles

Here’s a quick overview of all four members before we dive into their individual stories:

---

Kim YooYeon – The Leader

Kim Yooyeon (김유연), also written as Kim Yoo-yeon, is the leader and visual of Acid Angel from Asia. Born on February 9, 2001, she is the oldest member of both AAA and the full tripleS group. Her S Number is S5, meaning she was the fifth member officially revealed to fans. YooYeon’s journey to stardom wasn’t a straight line – she fought hard for her place and brought a quiet determination that fans love.

YooYeon is left-handed, which fans find adds a charming uniqueness to her performances.

She appeared on the Korean survival show My Teenage Girl before joining tripleS, which is where many fans first discovered her.

Her parents – a physician father and pharmacist mother – were initially against her becoming an idol, but came around once she debuted. Her mom reportedly wanted to buy 300 of her objekts (photocards) once she saw how serious her daughter was!

YooYeon studied abroad in New Zealand and the United States when she was young to learn English.

Her grandfather is a painter, and she loves spending time looking at art as a result.

She took the CSAT (Korea’s national college entrance exam) three times to get a score she was happy with, showing just how determined she is outside of music too.

She is enrolled in the Science Education program at Ewha Womans University but is currently on a leave of absence for her idol activities.

She is the leader of the EVOLution sub-unit as well, making her one of the most leadership-heavy members in the tripleS system.

YooYeon made her acting debut in the web drama “WHAT’S UP”, confirming her talents stretch well beyond just singing and dancing.

Her official representative color is Opera Pink, and her representative emoji is a 🐰 rabbit – both chosen to reflect her soft yet bright personality.

---

Kim NaKyoung – The Charismatic Main Dancer

Kim Nakyoung (김나경), born October 13, 2002 in Ulsan, South Korea, is one of the most versatile performers in the group. Fun fact right off the bat – her birth name is Kim Junseo (김준서), which she legally changed during her teenage years. Her S Number is S7, making her the seventh revealed tripleS member.

One of her most talked-about personal connections? She’s the younger sister of BIBI, the well-known Korean R&B solo artist, giving NaKyoung a fascinating backstory tied directly to the Korean music industry.

She’s the younger sister of popular soloist BIBI – yes, that BIBI – making her K-pop royalty in her own right even before her debut.

NaKyoung trained at P NATION before joining MODHAUS, where she also trained alongside future tripleS member HyeRin.

She became the first tripleS member to release solo music (outside of OSTs) after debut, dropping the single “Closer” on December 24, 2024.

Her favorite food is spicy food – she loves malatang and has mentioned it as one of her go-to late-night snacks.

She has a white Maltese dog named Dalle, who regularly appears in fan-related content.

If she wasn’t an idol, she’d be a zookeeper – which says everything about her love for animals.

Her favorite artist is Doja Cat, and she’s known to enjoy Western music alongside K-pop.

She appeared in Episode 12 of the SBS show “The Fan” prior to her debut, giving audiences an early look at her stage presence.

NaKyoung’s official fan name is “Nalody” (a blend of NaKyoung and melody), and her color is Cadet Blue.

She’s known HyeRin (fellow AAA member) since HyeRin was in elementary school, making them one of the closest friend pairs in the group.

---

Gong YuBin – The Main Dancer & Visual

Gong Yubin (공유빈), born February 3, 2005 in Giheung-gu, Yongin, South Korea, is the group’s Main Dancer and Visual. Her S Number is S8. YuBin is the kind of performer that immediately catches your eye – she’s described by fans as resembling characters from Sanrio, specifically Corocorokuririn, which pretty much sums up her adorable-yet-sharp visual appeal.

Before her K-pop career, YuBin had already been in front of cameras – as a child competitor on a TV cooking show!

She appeared on TV Chosun’s junior cooking survival show “I Am Chef” as a child and finished in the top 3, making her a literal award-winning cook.

YuBin was a former trainee at JYP Entertainment (acting division), then at HYBE’s Source Music, where she trained alongside members who would become NewJeans – she and Hanni are said to be close.

She has an official jump rope certificate because she spent so much of her childhood jump roping competitively.

Her representative color is Misty Rose, and her English name is Belle Gong – very fitting.

Her favorite color is purple, and she also loves sky blue and pink.

She considers Yoona from Girls’ Generation as her role model, citing her multifaceted career as the gold standard.

YuBin is close friends with J from STAYC, a bond that goes back to their trainee days at JYP.

She was inspired to become an idol after watching Apink, one of South Korea’s beloved girl groups.

Her hobbies include acting and needle felting – a surprisingly cozy contrast to her high-energy stage presence.

One of her quirky habits? She uses the person sitting next to her as a body pillow, which her fellow members have fondly confirmed.

---

Jeong HyeRin – The Maknae (Youngest Member)

Jeong Hyerin (정혜린), born April 12, 2007, is the maknae (youngest member) of Acid Angel from Asia. Her S Number is S2, meaning she was the second member revealed to the tripleS fandom. Despite being the youngest in AAA, HyeRin holds an enormous amount of respect within the tripleS world – she was actually voted by fans as the leader of the Visionary Vision sub-unit, a massive honor that speaks to her talent and presence.

Before joining tripleS, HyeRin had already built a notable pre-debut resume through acting and training.

She’s the second-revealed member of tripleS, making her one of the original faces the fandom got to know before the group even debuted.

Despite being the youngest in AAA, she was voted leader of the 12-member Visionary Vision sub-unit by WAV fans – a huge testament to her leadership energy.

HyeRin trained at P NATION for 3 years (2019–2021) before eventually joining MODHAUS, and she trained there alongside NaKyoung.

Before her idol career, she was a child actress under Kids Planet and made her acting debut in the 2018 web-series “Between Us”.

She appeared in the web drama “Between Us” as a child, meaning she was already a professional entertainer before most of her current fans were teens.

Her nickname is “RiNe”, a combination used affectionately by fans and even fellow members.

Her official representative color is Electric Purple – bold and fitting for someone who commands the stage despite her age.

Her top two favorite music genres are K-pop and Western music, showing she draws inspiration from a wide range of sounds.

She has an older brother (born 2005) and a younger brother, making her the middle child at home – something she says helped shape her balancing act of being both responsible and playful.

She is friends with CLASS:y’s Riwon and former HOT ISSUE member Dain, showing how well-connected she is across the K-pop world.

---

Achievements

Acid Angel from Asia made a serious impact in a short amount of time. Here are the highlights that really define what this unit meant for the K-pop landscape:

Debut EP Sales: Their debut mini-album ACCESS sold over 11,000 copies on its very first day, according to Hanteo Chart reports. By the end of the first week, that number climbed to over 17,760 copies. That’s a remarkable figure for a brand-new sub-unit, especially from a label that had never debuted a group before.

Monthly Chart Performance: Circle Chart (formerly Gaon Chart) reported that ACCESS sold over 23,674 copies in the month of November 2022 alone, showing sustained interest well after the release date.

Music Video Milestone: The “Generation” music video crossed the 10 million views milestone on YouTube, a major achievement for a debut single from a new sub-unit.

Pioneer of Fan-Participating Idol System: AAA holds the distinction of being the very first sub-unit formed through tripleS’ revolutionary fan-participation model – the Cosmo app Gravity system – where fans used digital collectibles (objekts) to vote members into units. This model was largely unprecedented in K-pop at the time.

Critical Recognition: Rate Your Music ranked their debut EP ACCESS among the top-rated K-pop EPs of 2022, and the single “Generation” earned a strong 4.01 average from fan reviewers – exceptional for a debut track.

tripleS 2024 Melon Global Icon Award: As part of the broader tripleS group, the members of AAA shared in the 2024 Melon Global Icon Award, a recognition of the group’s international reach and cultural influence.

Solo Achievements: NaKyoung became the first tripleS member to release solo music after debut, with her single “Closer” released December 24, 2024.

---

Discography and the Music Video

Main Discography

ACCESS Track Listing

The debut EP ACCESS runs for 13 minutes and 42 seconds and includes five full tracks:

The EP was released in three physical versions – Version A, Version B, and a special Objekt Music Album (re-released in February 2025), reflecting the group’s signature collectible culture.

“Generation” Music Video

The “Generation” music video is THE defining moment of AAA’s debut era. Musically, the track is described as future bass built on heavy hip-hop grooves, with dreamy vocals and rap interplay between all four members. The song was written and composed by Jaden Jeong (MODHAUS CEO and creative director) alongside El Capitxn, Vendors (Nano), and Kim Sung-woo.

The video itself captures the spirit of Asian Gen Z – energetic, aesthetic, and unbothered. It helped the group gain international fans almost overnight, with many viewers praising how fresh the concept felt compared to other K-pop debuts at the time.

You can watch the official “Generation” music video on the tripleS official YouTube channel.

---

Live Performances and World Tours

AAA’s members are not just recording artists – they’re live performers who’ve brought their energy to stages across the globe as part of the broader tripleS touring system. Since the full tripleS group rotates members into tour units, here’s a breakdown of every major tour their members have participated in.

Tour History Table

2026 Scheduled Performances

As of May 2026, no new standalone world tour for tripleS or any AAA sub-unit has been officially announced. However, the tripleS system continuously forms new sub-units and tour lineups, so new tour dates are expected to be revealed through the Cosmo app and the @triplescosmos official social accounts. Fans should keep an eye on those channels for upcoming Gravity events that may determine the next touring lineup.

---

If you’re a fan of K-pop sub-units, the story of Acid Angel from Asia is one worth knowing inside and out. From their fan-voted debut to their chart-breaking EP, these four members – YooYeon, NaKyoung, YuBin, and HyeRin – showed the world what happens when passionate performers meet a community that genuinely shapes the music they love. Keep following the tripleS WAV fandom and the official channels for whatever comes next – because with this group, the next chapter is always just one Gravity vote away.