The Devil’s Plan cast: All contestants in new Netflix reality series

Gabriela Silva
Cheo Yeon-woo and Park Kyung-lim in The Devil's Plan cast

The Devil’s Plan emerged as yet another success in the realm of Netflix competition shows. Whether you’re a newcomer to the series or revisiting it, here’s a rundown of every contestant in the cast that you should know.

While K-dramas reign supreme, Netflix has delved heavily into reality and competition series with a mix of Korean and overseas contestants. Single’s Inferno was its first major success as a dating series on a deserted island. Physical: 100 followed and successfully hooked audiences on 100 contestants going through extreme feats of athleticism to win. And fans adored the zombie apocalypse reality series Zombieverse.

There’s also the teen romance reality series 19/20, and shows like Siren: Survive the Island. The Devil’s Plan continued Netflix’s winning streak with a dynamic display of wits and competition as celebrities, lawyers, doctors, and influencers take part in mind games to win 500 million Korean won.

The Devil’s Plan is hosted by entertainment producer Jeong Jong-yeon, while the cast of contestants have to display their true selves. Here is a full breakdown of the cast of 12 contestants for The Devil’s Plan.

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The Devil’s Plan cast of contestants

Below is a full breakdown of the cast of The Devil’s Plan and their backgrounds. Netflix has steered away from a full Korean lineup, as seen in Physical: 100, as The Devil’s Plan includes contestants from the United States and Canada, while having some famous Korean celebrities.

Ha Seok-jin

Actor Ha Seok-jin in The Devil's Plan

Die-hard K-drama fans are well aware of who Ha Seok-jin is thanks to his earliest works. The actor began in is career in 2005 in Sad Love Stroy and Princess Lulu. Ha has made most of his career on the small screen starring in Drinking Solo, Thrice Married Woman, and Don’t Look Back: The Legend of Orpheus. In 2019, he starred in the K-drama classic Crash Landing on You as Ri Moo-hyuk. His most recent role was in Blind alongside 2PM’s Taec-yeon and Jung Eun-ji. Ha was also a cast member in Hot Brain: Problematic Men from 2015 to 20120.

He was introduced on The Devil’s Plan due to his impressive past of scoring in the top 1% during his college entrance exams. While having been an actor for 18 years, he majored in mechanical engineering at Hanyang University.

Cheo Yeon-woo

Go Player Cheo Yeon-woo in The Devil's Plan

Joining The Devil’s Plan cast is professional GO player Cheo Yeon-woo. According to Soompi, Cheo is a graduate of one of Singapore’s top universities. She also graduated from UCD Dublin. A Google search revealed the 34-year-old has a YouTube channel @goproyeonwoo. GO is a popular game among Asian countries that requires strategy and skill similar to chess. With being a professional, Cheo has the right mindset to take on the challenges in The Devil’s Plan.

Lee Hye-sung

Freelance announcer Lee Hye-sung in The Devil's Plan

You might recognize Lee Hye-sung from her work as a TV personality, having once been an announcer under KBS. She joins the cast of The Devil’s Plan as a contestant. Some of her work as a host includes Who Who is Doing The Best, It’s Ok to be Uncomfortable, and Love Mafia. In 2021, she was a cast member for a few TV series like Wild Wild Quiz, Our Neighbourhood Class, and Uncover World History.

She majored in business administration at Seoul National University and can speak English. According to Netflix, she would study 16 hours a day to be the top student in high school. Some K-drama fans might be able to see her cameos in Netflix’s King the Land and Celebrity.

Lee Si-won

Actors Lee Si-won and Ha Seok-jin in competition series The Devil's Plan

The Devil’s Plan cast includes notable actor Lee Si-won, who is also an inventor with 10 patents under her name, including a clear face mask. She majored in business administration at Seoul National University and has a Master’s degree in evolutionary psychology.

The actor made a name for herself with her role as Princess Boryang in Dream of the Emperor in 2012. Her career has led to her star in the supernatural romance Black and the Korean remake of the American series Suits. In 2018, she played the role of Lee Soo-jin in Memories of the Alhambra.

Since 2020, Lee played roles in the popular K-drama, Uncle, Tell Me What You Saw, and Adamas. The Devil’s Plan is her first variety competition series.

Boo Seung-kwan (Seungkwan)

Boo Seung-kwan (Seungkwan) from K-Pop group Seventeen

Any K-Pop fan would know the name Boo Seung-kwan, or better yet his stage name Seungkwan. He debuted as part of Seventeen in 2015. The K-Pop idol joins The Devil’s Plan cast as a contestant. Seungkwan may have what it takes to beat some of the best as he has appeared in variety series before. In 2018, he joined the cast of Unexpected Q and was a cast member in Prison Life of Fools, and Five Cranky Brothers in 2019.

Seo Dong-joo

Lawyer Seo Dong-joo in The Devil's Plan

The Devil’s Plan adds some charm with Seo Dong-joo, a Korean lawyer based in America. According to MyDramaList, Seo is also known by her American name Danielle Suh, and is a writer, lawyer, and broadcaster. Some fans may be surprised to learn she is the daughter of Korean model Seo Jeong-hee.

Seo graduated from Wellesley College with a degree in Arts and has a bachelor’s degree in Pure Mathematics from the Massachusetts Institute of Technology (MIT). That’s not all, as she has a master’s degree in Business Administration from the University of Pennsylvania and a law degree from the University of San Francisco. 

Park Kyung-lim

TV personality Park Kyung-lim in The Devil's Plan

In the cast of contestants for The Devil’s Plan is the beloved Korean comedian, actor, and entertainer Park Kyung-lim. The 44-year-old attended the New York Film Academy School of Film & Acting before returning to Korea to become a star in SBS’s X-Man.

At the age of 23, she won the Daesang (Grand Prize). Her career led her to host Oh! My School and Lovers of Joseon. When it comes to on-screen characters, she has appeared in Sweet Revenge, The Musical, and The Greatest Love. She has hosted multiple K-drama panels.

Guillaume Patry

Guillaume Patry and wife in wedding photos

The Devil’s Plan is throwing in a curveball with cast member Guillaume Patry, who was a professional StarCraft player. The Canadian, under the alias Grrrr…, won the StarCraft world championship in 1999. When arriving in Korea, he focused on Protoss race and helped pioneer new strategies. But Patry announced his retirement from StarCraft in 2004.

After retirement, he was a professional poker player with Bertrand Grospellier, a former French professional StarCraft gamer. But he also quit this and is now living an ordinary life. In South Korea, he appeared in Where Is My Friend’s Home as a cast member. “Guillaume was the only foreigner to reach the Korean StarCraft Hall of Fame when he was a professional gamer. He is excellent at unconventional attacks and he’s calm even in crisis,” said The Devil’s Game producer Jung Jong-yeon.

Orbit (Kwedo)

YouTuber Orbit in The Devil's Plan

The Devil’s Plan cast member and contestant Orbit is a former policy advisor to the Blue House. According to Soompi, he has a major in Astronomy and Space Sciences and is a popular science YouTuber. He appears on multiple Korean programs.

He runs a YouTube channel called Unrealscience and has been a commentator for many live rocket launches. Producer Jung Jong-yeon explained, “Kwedo will demonstrate a high understanding of any game with his scientific thinking and analysis and will prove that games are also science.”

Kwak Joon-bin

YouTuber Kwak Joon-bin in The Devil's Plan

Kwan Joon-bin is a Korean travel YouTuber who will compete as part of The Devil’s Plan cast. His YouTube channel, @KwakTube, has over 1.67 million subscribers. He takes his fans through different parts of the world to learn about culture, food, and language. After working for Azerbaijan Embassy, he became a YouTuber.

According to Korea JoongAng Daily, “Kwak is relatively fluent in English and Russian after majoring in Russian language and trade at Busan University of Foreign Studies. He also briefly worked at the Embassy of Azerbaijan before becoming a YouTuber in 2020.”

Seo Yoo-min

Orthopedist Seo Yoo-min in The Devil's Plan

The Devil’s Plan cast went through an open-recruitment process to find non-celebrities like orthopedic surgeon Seo Yoo-min. She graduated from NYU medical school and currently practices in America, and is fluent in Korean, Spanish, and English.

According to PD Jung, “Seo Yoo Min, who is fluent in Korean, English, and Spanish, will show an unexpected charm with her immense passion that even brought her [to Korea] from the US.”

Kim Dong-jae

Poker Player Kim Dong-jae in The Devil's Plan

Kim Dong-jae is a 25-year-old Korea University student at the School of Biomedical Sciences. He is also a professional poker player. After getting a perfect score on the written test, he joined the series through open casting.

His strategies with cards might come in handy in The Devil’s Plan. PD Jung explained, “Kim Dong Jae received the perfect score on the written test for the public [non-celebrity] screening and because he’s a non-celebrity, he has an unpredictable charm.”

The Devil’s Plan is available to stream on Netflix now.

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About The Author

Gabriela is a Senior TV and Movies Writer for Dexerto covering Netflix, Disney+, K-Dramas and everything in between. She has a bachelor's degree in Journalism from Fordham, and was previously a TV Writer for Showbiz Cheatsheet and List Witer for Screenrant. You can contact Gabriela at gabriela.silva@dexerto.com