Blackpink was originally intended to be a much larger group, with early plans from YG Entertainment suggesting a lineup of up to nine members under the working title "Pink Punk." While many trainees were considered, Cho Miyeon (now of (G)I-DLE) was the most prominent "fifth member" who trained and photographed alongside the final quartet before the group was officially narrowed down to Jisoo, Jennie, Rosé, and Lisa.
The history of Blackpink’s formation is one of the most documented yet speculative eras in K-pop history. As of 2026, looking back at a decade of dominance, the quartet’s structure seems inevitable and perfect. However, between 2011 and 2016, the internal landscape at YG Entertainment was a shifting puzzle of talent, potential, and strategic pivots. Understanding why Blackpink ended up as four members requires looking into the "Pink Punk" era, the specific departure of key trainees, and the management philosophy of YG Entertainment during the mid-2010s.
The Evolution of "Pink Punk": From Nine to Four
Long before their 2016 debut with "Boombayah" and "Whistle," YG Entertainment began teasing a new girl group that would follow in the footsteps of the legendary 2NE1. In 2011, Yang Hyun-suk, the founder of YG, announced plans for a "pretty" girl group that possessed both the talent of their predecessors and a more mainstream visual appeal.
Initially, reports and internal leaks indicated the group would consist of seven to nine members. This project was internally referred to as Pink Punk. The transition from a large ensemble to a tight-knit quartet was not an overnight decision; it was a five-year process of elimination and refinement.
During the Pink Punk era, several high-profile trainees were essentially "confirmed" by the fanbase through leaked practice photos and official "Who’s That Girl?" teaser videos. These included:
- Jennie Kim: The first to be revealed, appearing in G-Dragon's music videos.
- Kim Jisoo: Featured in various commercials and music videos before debut.
- Lalisa Manobal: The standout dancer from Thailand who won the 2010 YG audition.
- Park Chaeyoung (Rosé): The final addition to the quartet, arriving from Australia.
- Cho Miyeon: A long-term trainee who was frequently seen with the other four.
- Jinny Park: A rapper and vocalist who later debuted in Secret Number.
- Euna Kim: A participant in The Ark and Unpretty Rapstar.
- Jang Hanna: A vocalist known for her appearance on K-pop Star 3.
As the debut date was repeatedly pushed back, the lineup began to shrink. Some trainees left due to the long waiting period, others due to creative differences, and some due to internal evaluations that favored a specific group dynamic.
The Case of Cho Miyeon: The Unofficial Fifth Member
Of all the trainees who didn't make the final cut, Cho Miyeon is the one most synonymous with the "fifth member" title. Miyeon joined YG Entertainment around the same time as Jennie and trained with the group for approximately five years.
Historical evidence of her involvement is abundant. Numerous "pre-debut" photos circulate online showing Miyeon posing with Jisoo, Jennie, Rosé, and Lisa in practice rooms and on casual outings. To many fans at the time, she was a lock for the final lineup. Her vocal profile—a clear, powerful soprano—would have added a different texture to the group’s sound, which eventually leaned more heavily into the contrast between Rosé’s unique timbre and the rap-heavy styles of Jennie and Lisa.
Why Miyeon Did Not Debut with Blackpink
The exact reason for Miyeon's departure shortly before Blackpink’s debut remains a subject of intense debate among K-pop historians. The most prominent theory involves a violation of YG’s strict "no dating" policy. Rumors surfaced that Miyeon had gone on a trip to Japan with a fellow YG trainee, Jung Jinhyeong (a contestant on Mix & Match). In the highly controlled environment of idol training, such a breach of protocol often led to immediate dismissal or voluntary resignation.
However, other industry insiders suggest that the decision was purely a matter of artistic direction. As YG Entertainment refined the "Black" and "Pink" concept, they realized that a four-member group offered a more symmetrical and manageable brand. By the time 2016 arrived, Miyeon had left the company, eventually finding massive success as the main vocalist of (G)I-DLE under Cube Entertainment. This transition proved that her talent was never in question; rather, she didn't fit the specific "crush" concept YG finalized for the quartet.
Other Notable Trainees in the Pink Punk Lineup
While Miyeon is the most famous "missing" member, several others were integral to the group's early development. Understanding their roles provides context for why Blackpink was eventually streamlined.
Jinny Park
Jinny Park was a prominent trainee at YG for five years. She was a strong rapper and vocalist, often compared to Jennie in terms of her "swag" and performance style. Fans of the early Pink Punk rumors expected her to be part of a "double rapper" threat alongside Jennie and Lisa. After failing to make the cut for Blackpink, she participated in Produce 48 and eventually debuted with the group Secret Number. Her exclusion is often attributed to the fact that Lisa and Jennie already covered the rap positions so effectively that a third rapper was deemed redundant.
Euna Kim and Jang Hanna
Euna Kim was a highly praised trainee who had already gained public recognition. However, she left YG in 2013, citing personal reasons and a desire to pursue education, though she later returned to the music industry. Jang Hanna, who featured on Jinusean’s "Tell Me One More Time," was also a strong candidate. Her soulful R&B voice was a hallmark of the YG sound, but as the group’s musical identity shifted toward high-energy EDM and Hip-Hop (spearheaded by producer Teddy Park), the need for a traditional R&B vocalist diminished.
Why YG Entertainment Chose a Four-Member System
The decision to launch Blackpink as a quartet was a strategic masterstroke that prioritized individual branding over the "strength in numbers" approach popular in the mid-2010s (seen in groups like Twice or Girls' Generation).
- Direct Comparison to 2NE1: YG had already seen massive success with a four-member group. 2NE1’s structure allowed each member (CL, Dara, Bom, and Minzy) to become a distinct icon. By mirroring this count, YG could leverage a proven formula while updating it for a new generation.
- Symmetry and Performance: In choreography, four members allow for clear formations without a "center" being constantly obscured by a large number of bodies. It also makes line distribution more equitable, ensuring that every member is a "main" something—Main Rapper, Main Dancer, Main Vocalist, or Visual.
- The "Luxury" Brand Appeal: Blackpink was marketed from the start as an elite, high-fashion group. Managing the solo careers and brand deals of four individuals is significantly easier than managing nine. This allowed Jisoo, Jennie, Rosé, and Lisa to become global ambassadors for houses like Dior, Chanel, Saint Laurent, and Celine, respectively, without internal competition for the same endorsements.
Comparison of Planned vs. Actual Lineup
| Feature | Pink Punk (Early Concept) | Blackpink (Final Debut) |
|---|---|---|
| Member Count | 7 to 9 | 4 |
| Musical Style | R&B / Hip-Hop / Pop Mix | EDM / Hip-Hop / "Black" & "Pink" |
| Key Trainees | Miyeon, Jinny Park, Euna Kim | Jisoo, Jennie, Rosé, Lisa |
| Debut Year | 2012–2013 (Targeted) | 2016 (Actual) |
| Primary Producer | Various YG Producers | Teddy Park |
The Impact of the Final Lineup on K-pop History
The 2016 debut of Blackpink changed the trajectory of girl groups globally. Had the group debuted with five or nine members, the "Blackpink" we know today—defined by the distinct, unrepeatable chemistry of the four members—would not exist.
The quartet's success is often attributed to the fact that they are "all-rounders." In a five-member group, roles often become specialized to the point where one member might only handle a few seconds of a song. In Blackpink, every member is essential. Jisoo provides the traditional Korean vocal beauty and stability; Jennie provides the "it-girl" charisma and sharp rap; Rosé offers the emotive, international vocal color; and Lisa brings world-class dance performance and global appeal.
Adding a fifth member, even one as talented as Miyeon, would have shifted this delicate balance. The "four-pillar" structure allowed Blackpink to survive even during long hiatuses, as each member could sustain the brand through individual activities.
Life After YG: Where Are the Former Trainees Now?
By 2026, the trainees who didn't make it into Blackpink have carved out significant legacies of their own. This reinforces the idea that the "Pink Punk" pool was perhaps the most talented group of trainees ever assembled in one building.
- Cho Miyeon: After debuting with (G)I-DLE in 2018, she became one of the most respected vocalists and visuals in the industry. She has maintained a friendly relationship with the Blackpink members, proving that her departure was not a result of personal animosity.
- Jinny Park: As a member of Secret Number, she has found a dedicated fanbase and has finally been able to showcase the rap skills she honed during her years at YG.
- The Global Impact: The "what if" scenarios regarding Blackpink often ignore that the K-pop landscape benefited from these trainees spreading to other companies. (G)I-DLE’s unique self-producing identity, for instance, might never have flourished if Miyeon had been absorbed into the Blackpink machine.
Frequently Asked Questions
Who was officially supposed to be the 5th member of Blackpink?
While YG Entertainment never "officially" announced a fifth member, Cho Miyeon is the trainee most widely recognized as the near-final candidate. She trained with the other four for years and appeared in several pre-debut photos that mirrored the final group's aesthetic.
Why did Blackpink not debut as 9 members?
The "9-member" rumor originated from the early "Pink Punk" project. YG Entertainment likely narrowed the group down to ensure a more cohesive image and to avoid the management complexities associated with large groups. Strategic shifts at the company, led by producer Teddy Park, favored a four-member "all-star" lineup.
Did any Blackpink members leave before debut?
None of the final four members (Jisoo, Jennie, Rosé, Lisa) left the group. However, several high-profile trainees who were expected to be part of the group, such as Euna Kim and Jinny Park, left YG Entertainment during the long five-year development cycle between 2011 and 2016.
Is Miyeon still friends with Blackpink?
Yes. Despite the rumors surrounding her departure, Miyeon has been seen interacting warmly with the Blackpink members at award shows. She has also mentioned in interviews that she remains on good terms with her former fellow trainees.
Was Blackpink supposed to be a "pretty" version of 2NE1?
Yes, Yang Hyun-suk explicitly stated in early interviews that he wanted to create a group that had the talent and "swag" of 2NE1 but with a focus on a "pretty" and "chic" visual appeal. This concept eventually evolved into the "Black" (talent/edge) and "Pink" (beauty/femininity) duality.
Summary of the "Fifth Member" Narrative
The question of whether Blackpink was supposed to be five members is answered by the transition from the Pink Punk project to the final quartet. While the group was originally conceived as a larger ensemble, the final decision to debut only four members was a deliberate choice by YG Entertainment to maximize individual branding and group symmetry.
For fans and researchers in 2026, the history of Blackpink serves as a case study in "addition by subtraction." By narrowing the field to four world-class performers, YG Entertainment created a global phenomenon that likely would have been diluted by a larger lineup.
Practical Action: If you are interested in the musical evolution of these trainees, listen to (G)I-DLE’s early discography alongside Blackpink’s Square One. You can hear the different vocal directions YG and Cube Entertainment took with their respective talents, illustrating how one trainee pool eventually populated two of the most successful groups in K-pop history.
