DIA Member Profiles 2026: The Complete Guide to Korea's Do It Amazing Girl Group

DIA (다이아) isn’t just another name in the crowded world of K-pop girl groups — they’re a group that grew, changed, and kept pushing forward for over seven years under the lights of the Korean music industry. Standing for both DIAMOND and the backronym Do It Amazing, DIA made their mark as one of the most resilient and versatile South Korean girl groups of the third generation of K-pop.

If you’re a longtime member of the AID fandom or someone just discovering this group for the first time in 2026, you’ve landed in the right place. This complete guide walks you through everything — DIA band information, detailed DIA member profiles, their standout achievements, their full discography, and every live performance and world tour they’ve been part of. Let’s dive in!

DIA burst onto the Korean pop music scene on September 14, 2015, and from that first moment, they showed audiences what “Do It Amazing” really means. Let’s start with the basics.

DIA operated under MBK Entertainment for most of their career, later moving to PocketDol Studio (a sub-label of MBK Entertainment and Interpark). The group went through several lineup changes over the years, ultimately settling into a six-member lineup that fans came to know and love. Their official fandom name is AID — that’s DIA spelled backwards — and their official fan colors are AID Blue and DIA Red.

What made DIA stand out in the Kpop idol group landscape? A mix of bright pop anthems, sentimental ballads, and members with big personalities who each brought something different to the table. Members like Jung Chaeyeon gained massive visibility through the survival show Produce 101, and that spotlight helped shine a light on DIA as a whole.

Here’s a quick checklist of the core band facts:

• Group Name: DIA (다이아)
• Full Name Meaning: DIAMOND / Do It Amazing
• Origin: Seoul, South Korea
• Debut Date: September 14, 2015
• Debut Album: Do It Amazing
• Debut Single: “Somehow”
• Label(s): MBK Entertainment → PocketDol Studio
• Genre(s): K-pop, Pop, Contemporary R&B
• Active Years: 2015–2022
• Final Members (6): Eunice, Huihyeon, Jueun, Yebin, Chaeyeon, Eunchae
• Former Members: Seunghee, Eunjin, Jenny, Somyi
• Sub-Units: BinChaenHyunSeuS (BCHS), L.U.B
• Fandom Name: AID
• Fan Colors: AID Blue & DIA Red
• Official Social Media: Twitter (dia_official), Instagram (mbk.dia), Facebook (mbk.dia)
• Official YouTube: MBK Entertainment
• Youtube DIA: https://www.youtube.com/channel/UCrd_f23RRgdEhGgt6KVpD2A
• Status: On indefinite hiatus (since September 2022)

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The DIA Member Profiles

Member Overview Table

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1. Eunice (유니스)

Eunice is the heart and backbone of DIA — the leader and main vocalist whose experience in the industry ran deep even before DIA began. She carries a warmth and professionalism that shaped the group’s identity from day one.

She was a member of the girl group Jewelry right before they disbanded — which means she never got to release new music with them.

Eunice trained at Star Empire Entertainment before joining MBK Entertainment.

She genuinely idolizes Homer Simpson — yes, the cartoon character.

She is fluent in Japanese alongside Korean and English.

Her nickname within DIA was “Appa” (meaning “Dad”), reflecting her leader role with a nurturing vibe.

She and Huihyeon were famously described as the real-life Tom and Jerry within the group.

Eunice is close friends with Daehyun from B.A.P and Keumjo from Nine Muses.

She studied dance as her college major.

She can play the bass guitar.

Her other nicknames include “Bagel Eunice,” “Minion,” and “Short-Haired” — each one comes from a different era of her career.

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2. Huihyeon (희현) / Cathy (캐시)

Huihyeon is the group’s main rapper and one of its most visually recognizable faces. Known for her charismatic stage presence, she also went by the nickname Cathy during part of her career. She was also the group’s leader in certain periods of DIA’s timeline.

She competed on the survival show Produce 101, which gave DIA major exposure at a pivotal moment.

She was born in Jeonju but grew up in Namwon, North Jeolla Province.

Huihyeon and Eunice are known for their hilarious Tom and Jerry dynamic within the group.

On Produce 101, she and Chaeyeon performed Girls’ Generation’s “Into the New World” — a moment fans still talk about.

She is the tallest member of DIA’s final lineup, standing at 167 cm.

Her style frequently changed her hair color, earning her the nickname “Dyed Hair” from fans.

She maintained an active YouTube channel called “여기저기_” (Here and There).

Huihyeon stepped up as acting leader during various lineup transitions.

She has a natural charisma on camera that made her a fan favorite in variety show appearances.

Despite her fierce rapper image, fans note she has a surprisingly soft and playful side offstage.

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3. Jueun (주은)

Jueun joined DIA a little later than the original members — she came aboard in 2017 — but she quickly made the group her home with her powerful vocals and gentle personality. She’s the kind of member who quietly lifts everyone around her.

She participated in the survival show K-pop Star Season 2 — long before she joined DIA.

Jueun officially became a DIA member in 2017, joining alongside Somyi.

She can play three instruments: guitar, violin, and piano.

She studied Practical Music in college, giving her a solid musical foundation.

She has a brother who is older than her.

Jueun is very close with Hyunjin of LOONA, Yena of IZ*ONE, and several other K-pop idols.

She’s known for her warm, easygoing personality both on and off camera.

Her MBTI type of ISTP means she’s practical, observant, and quietly independent — sounds about right.

Despite being one of DIA’s later additions, Jueun became a core vocalist the group relied on heavily.

She brings a calm, grounding energy to the group that balances out some of the louder personalities.

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4. Yebin (예빈)

Yebin is one of DIA’s most recognized vocalists, and she proved her skills go beyond the group setting by also competing as an individual on the survival show The Unit. She’s passionate, dedicated, and brings a refreshing energy wherever she goes.

Yebin competed on the survival show The Unit in 2017–2018, representing DIA and gaining solo recognition.

Through The Unit, she also became a member of the project group UNI.T, which released music as a unit.

She’s from Chuncheon, a city in Gangwon Province known for its beautiful lakes and mountains.

Her shoe size is approximately 225–230 mm — a fun detail fans have noted over the years.

Yebin is part of the BCHS sub-unit of DIA alongside Chaeyeon, Huihyeon, and Eunice.

She’s known for being genuinely hardworking and dedicated during rehearsals and promotions.

Her star sign is Cancer, which fans say matches her deeply caring and loyal personality.

Yebin’s Instagram handle @yebin.0713 directly references her birthday (July 13).

She maintained strong fan relationships throughout DIA’s career through consistent fan engagement.

Even after DIA’s hiatus, Yebin has continued pursuing her individual activities in the Korean entertainment world.

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5. Chaeyeon (채연)

Chaeyeon is easily one of the most widely known members of DIA — and for good reason. Her time on Produce 101 and subsequent membership in the project group I.O.I gave her a massive public profile that put DIA on the map for a whole new audience. She’s the group’s visual and one of its most versatile performers.

On Produce 101 Season 1, Chaeyeon ranked 7th overall, which earned her a spot in the iconic project group I.O.I.

Her I.O.I activities between 2016 and 2017 brought enormous attention back to DIA as a whole.

She is best friends with GFRIEND’s Yuju — one of K-pop’s most well-known friendships.

Chaeyeon is also close friends with NCT’s Jaehyun.

She’s known as the visual of DIA — fans often call her one of the most beautiful faces in K-pop.

She and Huihyeon both appeared on Produce 101 and performed together, creating a memorable duo moment.

Chaeyeon and Huihyeon also performed a reunion version of Girls’ Generation’s “Into the New World” on the show.

She’s been involved in various acting and modeling endeavors beyond the group.

I.O.I’s comeback in May 2026 with their 3rd mini album IOI: LOOP brought Chaeyeon back into the spotlight once again.

She’s described by fellow members as someone with a strong professional drive who works incredibly hard on stage.

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6. Eunchae (은채) / Kwon Chaewon

Eunchae is DIA’s maknae-adjacent member — the youngest of the final lineup — and she’s known for her sweet vocals and bubbly personality. She underwent a stage name change to her real name Kwon Chaewon later in her career, reflecting her growth as an individual artist.

Eunchae is a huge fan of GOT7’s Youngjae — she’s made no secret of it over the years.

She competed on the survival show V1 before joining DIA in March 2016.

She joined DIA as a new addition while Seunghee was departing — a significant moment in the group’s early history.

Eunchae later changed her stage name to her real name, Kwon Chaewon, marking a new chapter in her career.

She appeared on the SBS global girl group audition show Universe Ticket in late 2023.

Her first solo fan meeting, “BLOOMING DAY”, was held in March 2024 — a milestone for her solo career.

She signed an exclusive contract with Started Entertainment in November 2024 and renewed it in December 2025.

As part of DIA’s L.U.B sub-unit, Eunchae showed a softer, more melodic side of her artistry.

She was previously a trainee at Ensoul Entertainment before her DIA journey began.

Despite being one of the younger members, Eunchae showed impressive maturity and consistency throughout DIA’s run.

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Achievements

DIA may not have racked up trophies the way some of K-pop’s biggest names have, but their journey is full of real milestones that matter. Here’s what they accomplished during their seven-year run:

• 🏆 First Music Show Win: DIA scored their first-ever music show win in 2018 — a moment the entire fandom celebrated after years of climbing.
• 🌟 Chaeyeon’s I.O.I Milestone: Jung Chaeyeon ranked 7th on Produce 101 Season 1 and became a member of I.O.I, one of K-pop’s most beloved project groups. This brought massive exposure to DIA.
• 🎤 Yebin’s The Unit Achievement: Yebin competed on The Unit and became part of the project group UNI.T, further expanding DIA’s footprint in the K-pop world.
• 📺 Produce 101 Visibility: Both Chaeyeon and Huihyeon appeared on Produce 101, putting DIA in front of millions of viewers at a critical growth point.
• 🎵 Signature Hit “On the Road”: Their 2019 comeback track from the Newtro mini album became their biggest charting hit, introducing them to a whole new wave of listeners.
• 💿 Discography Milestone: Over their career, DIA released 2 studio albums, 6 mini albums, multiple digital singles, and a repackage album — a solid and diverse body of work.
• 🌏 7-Year Career: Surviving lineup changes, the departure of multiple members, and the highly competitive K-pop landscape for seven years is an achievement in itself.
• 🎊 Sub-Unit Success: Both BCHS and L.U.B released material, showing the group’s range beyond their main lineup promotions.
• 🎬 Continued Individual Success: Even after the group’s hiatus, members like Chaeyeon (I.O.I reunion 2026), Eunchae/Kwon Chaewon (solo activities, Universe Ticket), and Huihyeon have continued building their careers.
• 💫 Loyal Fandom: The AID fandom stayed dedicated throughout every lineup change and hiatus, a testament to how deeply fans connected with DIA’s music and members.

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Discography and Music Videos

DIA released a rich catalog of music across their active years. Here’s a complete breakdown of their official releases:

Studio Albums

Mini Albums

Repackage Albums

Notable Digital Singles

Key Music Videos to Watch

If you’re new to DIA and want to understand why fans fell in love with this group, these are the music videos worth starting with:

• “Somehow” (2015) — The debut that started it all. Bright, fresh, and full of energy.

• “Happy Ending” (2016) — A fan-favorite that showcased the group’s vocal depth.

• “Will You Go Out With Me” (2017) — The title track from YOLO that introduced two new members to the world.

• “WOOWA” (2019) — From Newtro, this retro-inspired comeback became their most streamed track.

• “On the Road” (2019) — The song that reached the widest audience and remains their signature hit.

• “Daily” (2020) — A more mature and reflective sound, showing how far they’d grown in five years.

• “Rooting For You” (2022) — Their farewell single, a heartfelt goodbye to years of memories.

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Live Performances and World Tours

DIA built a reputation for energetic, polished live performances throughout their career. While they weren’t a group that ran globe-spanning arena tours like some of K-pop’s biggest acts, they held fan concerts, showcases, and promotional stages that left lasting impressions on their AID fanbase.

Tours and Concert Events

Note: As of 2026, DIA remains on indefinite hiatus following the expiration of member contracts in September 2022. Individual members continue to pursue solo and project activities. Chaeyeon’s participation in the I.O.I reunion (their 3rd mini album IOI: LOOP released May 2026) is the most notable group-adjacent activity this year.

Live Performance Highlights

DIA is remembered for several standout live moments:

• Produce 101 Stage (2016): Chaeyeon and Huihyeon’s performance on the massive survival show became one of the most-watched DIA-member related stages ever.
• Summer Ade Performances (2018): The group’s summer comeback had some of their most synchronized and visually striking choreography.
• WOOWA Comeback (2019): The retro concept came fully alive in live performances, with the members clearly enjoying every moment on stage.
• Final Rooting For You Stage (2022): A bittersweet but powerful performance that gave fans one last look at DIA together.

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Final Thoughts

DIA gave the K-pop world seven years of music, memories, and genuinely Do It Amazing moments. From Chaeyeon’s Produce 101 breakthrough to the heartfelt farewell of “Rooting For You,” every chapter of their story was written with real passion. Their fandom, AID, stayed with them through every lineup change, hiatus, and comeback — and that loyalty says everything about what DIA meant to people.

In 2026, the members are scattered across different labels and projects, but the music remains. If you haven’t explored their discography yet, now is the perfect time to start. Pop on “WOOWA,” then work your way back to “Somehow” — and you’ll understand exactly why the AID fandom still keeps the blue and red colors burning bright.