Who Is Park Hae-lin from 'Single's Inferno' Season 4?

Park Hae-lin in 'Single's Inferno' season 4.

(Image credit: Netflix)

published 21 January 2025

Most reality TV fans are familiar with the game changer: a contestant who arrives partway through the season to shake up the competition. In season 4 of Single's Inferno, Netflix's hit Korean dating show, Park Hae-lin, with her bubbly, outgoing personality quickly, changes the Inferno's mood. Fans are now curious about the newcomer, especially as her interest in two of the men is guaranteed to put her at odds with the other singles looking for love.

Like fellow season 4 standouts Yuk Jun-seo and Lee Si-an, Hae-lin already had a background in the Korean entertainment industry before her Netflix debut. Below, read on for everything we know about the new addition to Single's Inferno's season 4 cast, Park Hae-lin.

Park Hae-lin is a college student studying acting.

Park Hae-lin, 24, is a college student studying film arts at Sejong University in Seoul. She specializes in acting and, i n her Single's Inferno intro, Hae-lin says she enjoys learning about classic literature and unique characters from the different texts.

She made her K-drama debut last year.

In 2024, Hae-lin made her acting debut in the K-drama Tarot, in which she played a snack bar owner named Mingu. The Korean thriller about cursed tarot cards (unrelated to the U.S. horror movie) held a Single's Inferno connection, as it also served as host Dex's scripted TV debut.

In December 2024, she also appeared in the romance K-drama When the Silver Bell Rings, which followed the love stories of four seniors. She played the younger version of one of the main characters, Soo-hyang (played as an older woman by Ye Soo-jung).

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She's a former K-pop trainee who competed on a survival show.

Hae-lin is another member of the season 4 cast who dreamed of being a K-pop idol before entering her current career. Over her time as a trainee, Hae-lin trained under the agencies JYP Entertainment, PlayM Entertainment, and MNH Entertainment. She also competed on the 2017 survival show MIXNINE, where she was eliminated in the 10th episode and ranked at 35th out of 98 female trainees.

Like Lee Si-an, Hae-lin came quite close to debuting. Under PlayM Entertainment, she was named as a member of FAVE GIRLS, the pre-debut girl group that would eventually become Weeekly. Hae-lin left the company in July 2019 to pursue her studies. During a February 2020 appearance on the variety show I Can See Your Voice, she confirmed that she was no longer interested in becoming an idol.

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Quinci is a Culture Writer who covers all aspects of pop culture, including TV, movies, music, books, and theater. She contributes interviews with talent, as well as SEO content, features, and trend stories. She fell in love with storytelling at a young age, and eventually discovered her love for cultural criticism and amplifying awareness for underrepresented storytellers across the arts. She previously served as a weekend editor for Harper’s Bazaar, where she covered breaking news and live events for the brand’s website, and helped run the brand’s social media platforms, including Instagram, Facebook, and Twitter. Her freelance writing has also appeared in outlets including HuffPost, The A.V. Club, Elle, Vulture, Salon, Teen Vogue, and others. Quinci earned her degree in English and Psychology from The University of New Mexico. She was a 2021 Eugene O’Neill Critics Institute fellow, and she is a member of the Television Critics Association. She is currently based in her hometown of Los Angeles. When she isn't writing or checking Twitter way too often, you can find her studying Korean while watching the latest K-drama, recommending her favorite shows and films to family and friends, or giving a concert performance while sitting in L.A. traffic.