Tan (Ciipher)

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Tan (Ciipher) - Biography, Profile, Facts, and Career

Choi Seok Wo, or known as Tan, is a South Korean singer and actor. He is popular as a member of Ciipher, a Korean boy band that debuted in 2021. He is also known for his cameo appearance in a tvN drama, Ghost Doctor.


Already having a big dream as a K-Pop idol, Tan started his path by becoming a trainee for Starship Entertainment.

After some time being a trainee there, he later joined a survival show created by Starship Entertainment, NO.MERCY in 2014, which aired on Mnet.

Unfortunately, he couldn’t make it until the last episode. Tan got eliminated in the 10th episode and left the show.

Having a hard time continuing her trainee days, he later enlisted in military service. After he was released from military service, his excitement came back to debut as an idol.

Tan then pivoted her path by moving to another agency, Rain Entertainment, which is owned by the legendary Korean singer Rain.

In December 2020, he was finally announced as Ciipher member, which would debut in early 2021.

Finally, he made his debut as a K-Pop idol on March 15, 2021, by releasing the I Like You EP after spending 11 years of the training period.

One year later, Tan then was offered a role in tvN drama, Ghost Doctor (2022) alongside his boss, Rain.

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  • Real Name: Choi Seok Won (최석원)
  • Stage Name: Tan
  • Nickname: Tan, Seokwon
  • Birthday: August 25, 1996
  • Birthplace: Jinhae-gu, Changwon, Gyeongsangnam, South Korea
  • Zodiac Sign: Virgo
  • Chinese Zodiac Sign: Rat
  • Nationality: Korean
  • Religion: –
  • Profession: Singer, Actor
  • Education: Korean Arts High School
  • Hobbies: –
  • Facebook: –
  • Twitter: –
  • Instagram: –
  • TikTok: –
  • YouTube: –

Height, Weight, & Physical Appearance

  • Height: 184 cm (6’0″)
  • Weight: 75 kg (165 lbs)
  • Blood Type: B
  • Hair Color: Black
  • Eye Color: Black
  • Body Measurements: –
  • Shoe Size: 280 mm


  • Father: –
  • Mother: –
  • Sister: –
  • Brother: –

Girlfriend & Dating History

Unfortunately, there is no adequate information with whom Tan had a relationship in the past. There is also no information about his romantic partner at the present.

However, he is a handsome, stylist, and hardworking person who attracts many people. He might be in a private relationship, but it is guaranteed. Apparently, he focuses more on his career as a singer and member of Ciipher.

Net Worth

According to his job as a singer, his estimated net worth is around $1 million, which is derived from various performances and shows as Ciipher’s member.

Besides, he also did several advertisements, brand deals, and endorsements, and he also once got an acting project.


  • Tan has a huge interest in fashion
  • His favorite colors are black and red.
  • Tan is revealed to be acquainted with VAV’s Ayno in NO.MERCY Ep.2.
  • He revealed that he really had a hard time being a trainee after he got eliminated from NO.MERCY.
  • Tan had already completed military service before debuting with her group, Ciipher.
  • During his pre-debut days, he almost gave up to be an idol, but after he got enlisted in military service, his excitement came back to strive to be an idol again.
  • Among Ciipher members, he has already won various arm-wrestling battles.
  • He is called the strongest member of Ciipher.
  • His physique is so tall and sturdy.
  • He is almost as tall as Rain, her agency’s boss.
  • His stage name, Tan, has a meaning of Spanish reverberation sound.
  • Tan got 11 years of training.
  • His favorite music genres are tropical house and hip-hop.
  • Acting and singing are her special skills.
  • One of his role models is Rain.
  • His favorite singers are Michael Jackson, Usher, and Chris Brown.
  • His MBTI is ENFJ-T.
  • Java Chip is his favorite drink.
  • From all of Rain’s discography, his favorite song is Love Story because it motivated him to be a singer.
  • His favorite motto is “hard work never betrays you”.
  • When he gets free time, he usually will spend it hanging out with his close friends.
  • Tan is a friendly person.
  • He is flexible and can get along very well with everyone.
  • Tan is good at imitating bidet sounds.
  • His ideal type is…

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  • Beautiful (2022) – Nara the Socialite Wannabe OST Part.1
  • O.MERCY Part.3 (2015)

Drama Series

  • Ghost Doctor (tvN | 2022), as Choi Hoon Gil

TV Shows

  • NO.MERCY (Mnet | 2014-2015), as a contestant

Tan is really a hardworking and humble person. Even though in the middle of his struggle he wanted to give up, he still kept going.


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