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Top Boy Groups Most Affected by Member Losses

Writer: hpoppy26h
hpoppy26h
Sep 25
3 min read

Not every departure has the same impact. Some groups lose a member and continue almost unchanged, while others are permanently transformed. Based on the significance of the members lost, fan reaction, and long-term impact on the group's identity, these boy groups were among the most affected.

Remaining members of TVXQ
The remaining members of TVXQ strike a confident pose in matching red jackets, showcasing their enduring presence and style in the music industry.

1. TVXQ

Members lost: Junsu, Yoochun, Jaejoong (2009)

  • Lost 3 of 5 members (60% of the group).

  • One of the biggest contract disputes in K-pop history.

  • Split the fandom and industry.

  • TVXQ continued as a duo while the departing members formed JYJ.

Impact Rating: ★★★★★


2. EXO

Members lost: Kris (2014), Luhan (2014), Tao (2015)

  • Lost three members during their peak popularity.

  • All three departures resulted from contract disputes.

  • Changed EXO's Chinese market strategy and lineup.

Despite the losses, EXO remained one of K-pop's biggest groups.

Impact Rating: ★★★★★

Remaining members of BigBang
The remaining members of BigBang strike a bold and colorful pose, showcasing their unique styles and vibrant fashion.

3. BIGBANG

Members lost: Seungri (2019), T.O.P (group departure after hiatus)

  • Lost members through scandals and legal controversies.

  • Activities became far less frequent.

  • The group's image changed significantly.

BIGBANG survived but never returned to the same level of group activity.

Impact Rating: ★★★★★


4. iKON

Member lost: B.I (2019)

  • Leader, producer, songwriter, and creative force behind many hits.

  • Departure affected the group's music and direction.

  • Often cited as one of the most damaging single-member losses in K-pop.

Impact Rating: ★★★★★


5. MONSTA X

Member lost: Wonho (2019)

  • One of the group's most recognizable members.

  • Left due to allegations later largely disproven.

  • Fans continued supporting both MONSTA X and Wonho.

Impact Rating: ★★★★☆

Stray kids are now a successful 8 member group
Stray Kids showcase their unique style and energy as a successful 8-member group in this dynamic group photo.

6. Stray Kids

Member lost: Woojin (2019)

  • Departure occurred just before a comeback.

  • Songs and content had to be re-recorded.

  • Remaining members successfully rebuilt the group.

Today, Stray Kids are bigger than ever.

Impact Rating: ★★★★☆


7. NCT

Members lost: Lucas, Taeil

  • Lucas left after a lengthy controversy and hiatus.

  • Taeil's departure generated significant media coverage.

  • Due to NCT's large roster, the overall impact was less severe than for smaller groups.

Impact Rating: ★★★★☆

Treasure now a 10 member group
K-pop group Treasure showcases their dynamic style as a 10-member lineup.

8. TREASURE

Members lost: Bang Yedam and Mashiho (2022)

  • Lost a main vocalist and a popular Japanese member.

  • Altered the group's sound and member balance.

  • Fans were particularly shocked by Yedam's departure.

Impact Rating: ★★★★☆


9. SHINee

Member lost: Jonghyun (2017)

  • One of K-pop's most talented vocalists and songwriters.

  • The group's continuation was uncertain after his passing.

  • SHINee chose to continue while honoring his legacy.

Impact Rating: ★★★★★ (emotionally and historically)


10. ASTRO

Member lost: Moonbin (2023)

  • Deeply affected both members and fans.

  • Moonbin was one of the group's most beloved performers.

  • ASTRO's future activities were significantly impacted.

Impact Rating: ★★★★★ (emotionally)


Most Damaging Losses by Percentage

Group

Members Lost

TVXQ

3 of 5 (60%)

FIFTY FIFTY*

3 of 4 (75%)

EXO

3 of 12 (25%)

BIGBANG

2 of 5 (40%)

TREASURE

2 of 12 (17%)

*FIFTY FIFTY is a girl group, included here only for comparison.


Most Important Single-Member Losses

If measuring the impact of losing one key member, these are often considered the biggest:

  1. B.I (iKON)

  2. Jonghyun (SHINee)

  3. Moonbin (ASTRO)

  4. Wonho (MONSTA X)

  5. Woojin (Stray Kids)

  6. Bang Yedam (TREASURE)


Overall Ranking

  1. TVXQ

  2. EXO

  3. BIGBANG

  4. iKON

  5. SHINee

  6. ASTRO

  7. MONSTA X

  8. Stray Kids

  9. NCT

  10. TREASURE

These groups are the clearest examples of how member departures can reshape a boy group's career, image, and future, yet many also demonstrate K-pop's remarkable ability to adapt and survive after major lineup changes.


Researched on google and reworded by Microsoft Co-pilot - August 2026

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