K-Pop Idols from SM Entertainment with the Longest Training Period Each Generation
A list of SM idols with the longest trainee periods each generation, reaching up to 9 years before debut.
Kapanlagi.com - KPop groups with all members being native Koreans are often not immediately recognized by the public due to their strong global appeal. Without a mix of nationalities, they have still managed to penetrate the world market since their debut and prove that local talent cannot be underestimated.
This phenomenon proves that the KPop industry does not always rely on multinational formations to achieve popularity. Groups with local Korean members are actually able to build a solid identity and consistent global appeal.
So, which KPop groups have all members being South Korean? Let’s check out the complete list below.
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KPop group with members from Korea/X @apink_2011
Apink, a girl group known for their cheerful and feminine concept, debuted on April 19, 2011, under Plan A Entertainment (now IST Entertainment). The group originally consisted of seven members, but currently has five members: Chorong, Bomi, Eunji, Namjoo, and Hayoung, all of whom are South Korean citizens. Since their debut, Apink has won various awards at prestigious events such as the Golden Disc Awards, Seoul Music Awards, and Mnet Asian Music Awards.
Their popularity continues to rise with hit songs like "NoNoNo" and "LUV," solidifying their position as one of the leading girl groups in K-Pop. Apink is known for their consistent image and stable vocal abilities, allowing them to remain relevant and loved by fans for over a decade.

KPop group with members from Korea/X @officialbtob
BTOB, short for "Born to Beat", is a boy group that debuted on March 21, 2012, under Cube Entertainment. The group currently consists of six members: Seo Eun-kwang, Lee Min-hyuk, Lee Chang-sub, Im Hyun-sik, Peniel Shin, and Yook Sung-jae, all of whom are South Korean nationals. They are widely known for their outstanding vocal abilities, emotional ballads, and self-producing music.
BTOB has built a strong reputation as a stable idol group in performance and musically credible, gaining loyal support from their fandom, Melody. They have won various awards, including Best Vocal Group at the 30th Golden Disc Awards in 2016, and several of their albums have topped the Gaon Album Chart.

KPop group whose members are Korean/x @bts_twt
BTS, or Bangtan Sonyeondan, is a phenomenal boy group formed in 2010 and debuted on June 13, 2013, under Big Hit Entertainment (now HYBE Labels). The group consists of seven members: RM, Jin, Suga, J-Hope, Jimin, V, and Jung Kook, all of whom are South Korean nationals. They are known for their profound lyrics, often discussing mental health, teenage issues, and the journey to self-love.
BTS has achieved unprecedented global success, breaking various sales records and becoming the first Korean group to top the US Billboard 200. Their popularity extends worldwide, leading the Hallyu wave to the United States and gaining massive international recognition.

KPop group whose members are Korean/Instagram @mamamoo_official
MAMAMOO is a girl group formed by RBW and debuted on June 18, 2014, with their first mini album, Hello. The group consists of four members: Solar, Moonbyul, Wheein, and Hwasa, all of whom are South Korean nationals. They are known for their strong live vocal abilities, exceptional harmonies, and often write most of their own song material.
MAMAMOO's debut is considered by critics to be one of the best K-Pop debuts of 2014, and they quickly gained domestic fame. The group has won numerous awards and is recognized as one of the leading girl groups in K-Pop, with all of its members also achieving success in their solo careers.

KPop group whose members are Korean/x @officialmonstax
MONSTA X is a boy group that debuted on May 14, 2015, under Starship Entertainment. The group consists of six members: Shownu, Minhyuk, Kihyun, Hyungwon, Joohoney, and I.M, all of whom are South Korean citizens. They are known for their strong concepts, energetic music, and intense stage performances.
Since their debut, MONSTA X has built a solid global fanbase and achieved success on both Korean and international charts. They have won various awards and are recognized for their contributions to the K-Pop genre with their unique musical style.

KPop group whose members are Korean/x @ikonic_143
iKON is a boy group formed by YG Entertainment and debuted on September 15, 2015, with the single "My Type". The group currently consists of six members: Jay, Song, Bobby, DK, Ju-ne, and Chan, all of whom are South Korean citizens. They are known for their catchy hip-hop music and charismatic stage performances.
iKON quickly gained massive popularity, especially with their hit song "Love Scenario" that dominated the charts. They have won many prestigious awards and continue to be one of the influential boy groups in the K-Pop industry.

KPop group whose members are Korean/Instagram @gfriendofficial
GFRIEND is a girl group formed by Source Music in 2015 and debuted on January 15, 2015, with the EP Season of Glass. The group consists of six members: Sowon, Yerin, Eunha, Yuju, SinB, and Umji, all of whom are South Korean citizens. They gained early momentum despite coming from a small company, winning several rookie awards for female artists.
GFRIEND continued their commercial success with their third EP, Snowflake, and the main single "Rough" which won first place on various music shows. Although the group disbanded in 2021, some members have formed a new group, Viviz, and they are still remembered for their unique "power innocent" concept.

KPop group whose members are Korean/x @fromis_9
fromis_9 is a girl group formed through the reality show Idol School in 2017 and debuted on January 24, 2018, with the EP To. Heart. The group currently consists of five members: Song Ha-young, Park Ji-won, Lee Chae-young, Lee Na-gyung, and Baek Ji-heon, all of whom are South Korean.
The group's name is an abbreviation of "From Idol School" and also means "promise" in Korean pronunciation, symbolizing their promise to become the best girl group.
Despite experiencing several management changes and member departures, fromis_9 continues to release music and maintain a loyal fanbase. They are known for their bright and fresh concepts and have appeared in various magazines and served as ambassadors for several brands.

KPop group with members from Korea/x @atessofficial
ATEEZ is a boy group formed by KQ Entertainment and debuted on October 24, 2018, with the EP Treasure EP. 1: All to Zero. The group consists of eight members: Hongjoong, Seonghwa, Yunho, Yeosang, San, Mingi, Wooyoung, and Jongho, all of whom are South Korean nationals. They are known for their powerful stage presence and dynamic concepts.
Since their debut, ATEEZ has achieved many milestones and captivated millions of fans worldwide with innovative music releases and passionate performances. They have released numerous EPs and studio albums, as well as signed contracts with record labels in the US and Japan, showcasing their global reach.

KPop Group with Members from Korea/x @stayc_official
STAYC, short for "Star to a Young Culture", is a girl group formed by High Up Entertainment and debuted on November 12, 2020, with the single album Star to a Young Culture. The group consists of six members: Sumin, Sieun, Isa, Seeun, Yoon, and J, all of whom are South Korean nationals. They are known for their "teen crush" concept and appealing youthful energy.
STAYC quickly attracted fans' attention with their catchy music and charming visuals. They have embarked on their first world tour from September 2023 to March 2024, demonstrating their growing popularity on the international stage.

KPop group with members from Korea/x @itzyofficial
ITZY is a girl group formed by JYP Entertainment and debuted on February 12, 2019, with the single album It'z Different. The group consists of five members: Yeji, Lia, Ryujin, Chaeryeong, and Yuna, all of whom are South Korean citizens. They are known for their "teen crush" concept and messages about independence and self-love in their music.
ITZY set a new record for the most views in 24 hours for a K-Pop debut and became the first K-Pop girl group to achieve the "Rookie Grand Slam". They continue to release successful EPs and studio albums, with songs topping the charts in South Korea and even entering the US Billboard 200.

KPop group with all Korean members/x @boynextdoor_twt
BOYNEXTDOOR is a boy group that debuted on May 30, 2023, under KOZ Entertainment, a subsidiary of HYBE Corporation. The group consists of six members: Sungho, Riwoo, Jaehyun, Taesan, Leehan, and Woonhak, all of whom are South Korean citizens. They are known for their friendly "boy-next-door" concept and relatable music.
Although relatively new, BOYNEXTDOOR has attracted attention with their fresh musical style and energetic performances. They have shown great potential to become one of the leading boy groups in the current Generational K-Pop.
What are some KPop groups with all Korean members? Some KPop groups with all Korean members include Apink, BTS, MAMAMOO, MONSTA X, iKON, GFRIEND, fromis_9, ATEEZ, STAYC, ITZY, and BOYNEXTDOOR.
Why can KPop groups with all Korean members be popular globally? KPop groups with all Korean members can be popular globally due to their extraordinary talent, hard work, strong music concepts, and their ability to touch the hearts of fans around the world, proving that local identity does not hinder international success.
When did BTS debut and who are the members? BTS debuted on June 13, 2013, and consists of seven members: RM, Jin, Suga, J-Hope, Jimin, V, and Jung Kook, all of whom are South Korean citizens.
What concept does ITZY carry? ITZY is known for its 'teen crush' concept and messages about independence and self-love in their music.
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A list of SM idols with the longest trainee periods each generation, reaching up to 9 years before debut.
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The presence of these foreign idols is not just a complement, but they are often believed to hold visual positions as the official face of the group. Their charm often steals attention from debut until dominating various international stages.