List groups most affected by member departures

If we're looking at which K-pop groups were most heavily affected by member departures, considering the number of members lost, the impact on the group's popularity, and how much the lineup changed, these groups stand out:

1. EXO

Members lost: Kris, Luhan, Tao

EXO debuted as a 12-member group but lost three Chinese members between 2014 and 2015. At the time, EXO was one of the biggest groups in the world, making the departures a major shock. Despite this, EXO continued successfully as nine members.

Impact: ★★★★★

2. TVXQ

Members lost: Junsu, Yoochun, Jaejoong

In 2009, TVXQ lost three of its five members due to contract disputes. Losing 60% of the group forced TVXQ to continue as a duo, while the departing members formed JYJ.

Impact: ★★★★★

Five stylish men stand together, exuding confidence in coordinated, trendy outfits against a textured background.

3. FIFTY FIFTY

Members lost: Aran, Sio, Saena

Only one member, Keena, remained after the 2023 contract dispute. The group essentially had to be rebuilt from scratch despite the massive success of "Cupid."

Impact: ★★★★★

Girls' Generation showcases their iconic style in chic black dresses, embodying the essence of legendary K-pop elegance.

4. Girls' Generation (SNSD)

Members lost: Jessica

Although only one member left, Jessica's departure in 2014 created one of the biggest controversies in K-pop history. SNSD continued successfully as eight members.

Impact: ★★★★★

5. BigBang

Members lost: Seungri, T.O.P

BigBang was affected by multiple scandals involving members. While the group technically survived, its activities were significantly altered.

Impact: ★★★★☆

6. NCT

Members lost: Lucas, Taeil, and potentially other sub-unit changes

NCT's large membership means departures don't affect the group as dramatically as smaller groups, but Lucas and Taeil's exits attracted enormous attention due to the circumstances.

Impact: ★★★★☆

7. MONSTA X

Members lost: Wonho

Wonho's departure was particularly significant because he was one of the group's most recognizable members. Many fans continue to associate him closely with MONSTA X.

Impact: ★★★★☆

8. TREASURE

Members lost: Bang Yedam, Mashiho

Losing the group's main vocalist (Yedam) and a popular Japanese member (Mashiho) significantly changed TREASURE's sound and lineup.

Impact: ★★★★☆

The original lineup of Treasure poses energetically, showcasing their vibrant style and camaraderie against a bold, graphic backdrop.

9. (G)I-DLE

Members lost: Soojin

Soojin was a core performer and dancer. Her departure was initially viewed as a huge blow, but the group later achieved even greater success.

Impact: ★★★★☆

10. Stray Kids

Members lost: Woojin

Woojin's departure came just before a comeback, forcing the group to re-record songs and reorganize positions.

Impact: ★★★☆☆

Honorable Mentions

SHINee

·         Jonghyun (2017, passed away)

ASTRO

·         Moonbin (2023, passed away)

Ladies' Code

·         EunB and RiSe (2014, car accident)

These groups experienced losses that went beyond lineup changes and profoundly affected both members and fans.

Shinee together in a heartfelt moment, remembering their beloved member Jonghyun.

Most Affected Overall (Top 5)

1.    TVXQ (3 of 5 members lost)

2.    FIFTY FIFTY (3 of 4 members lost)

3.    EXO (3 members lost during peak popularity)

4.    Girls' Generation (Jessica departure's enormous impact)

5.    BigBang (multiple controversies and departures)

Of all K-pop groups, TVXQ and EXO are often considered the classic examples of groups whose histories were permanently changed by major member departures, while FIFTY FIFTY represents one of the most dramatic modern examples.

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