The Cast of 'Single's Inferno' Season 4: Your Guide to Who's Who and Their Instagrams

Spoilers for Single's Inferno season 4 episodes 1-8 ahead. After a long year of waiting, Single's Inferno is finally back for an exciting new season. Netflix's hit Korean reality dating show has become appointment viewing for fans of Korean entertainment across the globe, as it follows a group of young people fighting for love and a chance to escape the deserted island Inferno for a date in the luxury locale Paradise. To add a layer of anonymity, contestants must keep their ages and careers secret unless they're on a Paradise date, to get to know each other without making assumptions.

In addition to panelists Hanhae,Dex, Hong Jin-kyung, Lee Da-hee, and Kyuhyun returning, Single's Inferno season 4 has gathered another cast of gorgeous singles to follow over the 10-episode season. In a trend that has grown over the seasons, this year's cast includes some bonafide celebrities that fans ID'ed before the show even aired, including K-drama actors and former aspiring idols. Below, read on to meet the red-hot cast of Single's Inferno season 4, including how to follow them on Instagram and their ages provided by the show.

Lee Si-an

Lee Si-an, 25, is a freelance model who works regularly for an athleisure brand. She's a familiar face to fans of idol survival shows, as she previously competed in 2017's Idol School and 2018's Produce48. She was also a member of the pre-debut girl group Happyface Girls.

Si-an is a former competitive swimmer who now swims as a hobby. In her intro, she says that being single is rare for her and that she joined the show to have a "fiery, passionate, whirlwind romance." She also says she's looking for a guy with a "strong inner self."

Instagram: @youseeany

Chung You-jin

Chung You-jin, 28, is a dancer who's pursuing a master's degree in both traditional Korean and contemporary dance at Ewha Womans University. She's also a member of the dance company Homo Nomad, and she teaches dance classes at all ages. As a hobby, she enjoys freediving and says it makes her feel like a mermaid.

You-jin says she's been described as "adorable, lovable, cute, and a little quirky," and that once a guy told her it was like there were "hearts floating around her." When she likes someone, she sweeps her hair to the side without realizing it.

Instagram: @youjini1225

Kim Min-seol

Kim Min-seol, 23, is a freelance news anchor who currently works as a sportscaster for the local news station SPOTV. She graduated from college with a degree in acting, and made her acting debut in 2022 with minor roles in the K-dramas Fall For You and Café Minamdang.

Min-seol describes herself as having a puppy-like face and energy, like a Maltese. She says she's competitive in both games and love, and goes after guys with a "fierce determination, diving right in without hesitation."

Instagram: @kimminseoll

Bae Ji-yeon

Bae Ji-yeon, 25, is a spatial designer who arranges furniture for brand events and contributes ideas to brands' merchandising design.

In her intro, Bae Ji-yeon shows she's passionate about fitness and horseback riding. She says her ideal type is a guy with a fit body and nice shoulders, and admits she doesn’t want “anyone who seems too calculating.”

Instagram: @bxxyon

Kim Hye-jin

Kim Hye-jin, 25, is a model who specializes in fashion and beauty ads. In her Single's Inferno intro, she explains that she's been working with an eyewear brand for two years. She was also previously crowned Miss Korea in 2020.

Hye-jin describes herself as a "silly" and "unpredictable" person, who will dance when she's excited, even in public. She says her move when she likes someone is to stare at them intently without realizing it, which makes them fall for her.

Instagram: @07_27___

Kim A-rin

Kim A-rin, 25, is a commercial model who has worked for beauty, wedding, and fitness brands. She shares on the show that she has worked with a beauty brand for the past three years and in her free time enjoys skateboarding.

In her intro, Kim A-rin describes herself as having a "surprising charm," because she often seems aloof but is actually easy-going. She says she joined Single's Inferno to “meet people who are attractive on the inside and outside like me.”

Instagram: @arinin_dd

Park Hae-lin

Park Hae-lin, 24, joins the cast as a surprise game-changer in episode 5. She's a college student majoring in acting and film arts at Sejong University and has already appeared on-screen. She had a small role in the 2024 thriller K-drama Tarot, which also starred Single's Inferno host Dex.

Hae-lin describes her personality as "cool, quick to acknowledge things...very cute and sweet." She adds, "I'm very outgoing, so I may seem like a bulldozer on the outside. But when I'm around someone I really like, I get nervous and a little bit awkward." She gets most excited when flirting with someone else makes them "blush from shyness."

Instagram: @qkrgofls

Kim Tae-hwan

Kim Tae-hwan, 31, is a DJ who produces electronic music. He also runs an underground club in Seoul's Itaewon neighborhood which promotes house music, a less mainstream genre in South Korea. Earlier in his career, he worked as a model and actor. After his debut in the 2016 Chinese drama My Amazing Boyfriend, he appeared in the K-dramas The Bride of Habaek, The King: Eternal Monarch, and Love Class.

Kim Tae-hwan gives a strong first impression in season 4, introducing himself as "full of love with unshakable self-confidence." He also says that he has prioritized love over career opportunities in the past and that he's the most serious about love.

Instagram: @keemtehwan

Kook Dong-ho

Kook Dong-ho, 30, is a certified public accountant employed at a large firm.

He quickly charms the Single's Inferno panel with his intro, describing himself as warm-hearted, gentle, and expressive. "I’m determined to approach the woman I like and make her my own," he says.

Instagram: @donghokook

Theo Jang

Theo Jang (Korean name Jang Tae-oh), 29, is an actor who started his career in South Korea and hopes to become an established star in Hollywood. He previously appeared in the K-dramas Miss Independent Ji-eun, A Man in a Veil, and The King of Tears, Lee Bang Won.

In his intro, Theo describes his personality as bold and straightforward "like a bulldozer." He also says that, though he knows his looks scream "bad boy," he doesn't play hard to get.

Instagram: @tachyonproject

Kim Jeong-su

Kim Jeong-su, 33, owns five coffee shops and bakery cafés, including locations in trendy Seoul neighborhoods like Seongsu and Hannam.

In his intro, Jeong-su describes himself as a golden-retriever boyfriend, who "strives for a playful and affectionate relationship." He says his "deep, reassuring voice" is his biggest weapon.

Instagram: @justsoo_it

Yuk Jun-seo

Yuk Jun-seo, 28, is a former UDT soldier who now works as an artist focused on painting. He began his entertainment career as a cast member on the military survival show The Iron Squad. He also acted in seasons 2 and 3 of the Netflix K-drama Sweet Home.

In Single's Inferno, he reveals that despite his harsh appearance, he's actually been described as adorable, cute, clumsy, and carefree. He also shows off his softer side in episode 1 when he reveals that he's a devoted uncle to his niece.

Instagram: @6dory

An Jong-hoon

An Jong-hoon, 32, joins the cast after half of the women vote him into Inferno. Jong-hoon is a restauranteur who owns a two-floor pub in Seoul's Apgujeong-dong neighborhood.

In his brief intro, Jong-hoon describes himself as "a bit curt" with a "bright and thoughtful side too." He also claims that "his wide shoulders [and kind eyes] give off a trustworthy feel."

Instagram: @jh_128_

Hong Seong-bo

Unfortunately, Hong Seong-bo was eliminated after the women's speed-dating vote in episode 5. According to AsianWiki, Seong-bo is an actor who debuted with a small role in the 2022 melodramatic K-drama Eve and appeared in the 2023 movie Killing Romance.

In his brief intro in episode 4, Seong-bo says he gives off a "fierce" first impression, but once people talk to him, they "quickly realize how fun and pleasant I am." He adds, "I usually don't hesitate with my feelings. I naturally grow on people, and before you know it, we'll be dating."

Instagram: @h____hvv

Kwon Ki-ha

Kwon Ki-ha, 33, is the second man eliminated after episode 5's vote (though he has shared his hopes to return for Single's Inferno season 5). The entrepreneur and influencer owns the clothing brand FRONTMENT and he boasts over 900,000 followers across Instagram, TikTok, and YouTube.

As host Hanhae says of Ki-ha, "He has a cute face, but nothing's cute about his body." In his intro, Ki-ha shows he takes pride in his physical health. On the relationship front, he describes himself as "caring," and admits to finding older women's maturity "more attractive."

Instagram: @kwon_start_