billlie’s Siyoon: Full Profile, Fun Facts, Debut Era, Etc.

billlie's Siyoon

Full Profile Of billlie’s Main Rapper; Kim Si-yoon!

billlie (hangul: 빌리) is a South Korean girl group that debuted on November 10, 2021, under Mystic Story Entertainment. This girlgroup debuts with a single titled “RING X RING”. billlie also has 7 original members line-up with Moon Sua, Suhyeon, Haram, Tsuki, Sheon, Siyoon, and Haruna.

In this article, there’s detailed information about a member of billlie who has a position as the main rapper. Do you know who is she? If you are curious about it, make sure you don’t skip any information from this article below and get to know more about billlie’s Siyoon’s full profile, and fun facts until her debut!

billie’s Siyoon: Full Profile

billlie's Siyoon

Real Name : Kim Si-yoon (hangul: 김시윤)

Stage Name : Si-yoon (hangul: 시윤)

Birth : Gyeonggi-do, Gwangmyeong City, South Korea, February 16, 2005

Star Sign : Aquarius

Height : 168 cm (5’6″)

Weight : 48 kg (105 Ibs)

Blood Type : B

Position of the group : Main Rapper, Lead Dancer

Family Member : Parents

Education :

  • Chunghyeon Middle School (Transfer)
  • Gwanghee Middle School (Graduated)

Nationality : Korean

Official Social Media :

billie’s Siyoon: Fun Facts

billlie's Siyoon
  1. billlie’s Siyoon’s MBTI is INFP
  2. billlie’s Siyoon’s representative color is yellow
  3. billlie’s Siyoon’s representative emoji is a chick
  4. billlie’s Siyoon  attended Def Dance Academy and Millennium Dance Academy before becoming a trainee at Mystic Story
  5. billlie’s Siyoon was featured in various TV performances and dancing videos as a young child
  6. billlie’s Siyoon appeared in BOYFRIEND’s ‘Love Style’ MV teaser
  7. billlie’s Siyoon was featured in a Reuters article about aspiring K-Pop trainees in 2015
  8. billlie’s Siyoon passed her audition in April 2019. She became a trainee at Mystic around the same time as Haram
  9. billlie’s Siyoon performed her first listen stage with Doyoon (former pre-debut member) on May 30, 2021
  10. billlie’s Siyoon is a regular model for Popteen, a Japanese teen fashion magazine
  11. billlie’s Siyoon’s fandom name is ‘Unicity’. Her logo is a chick popping out of an egg
  12. billlie’s Siyoon’s nicknames are positive energy and lovely
  13. billlie’s Siyoon’s role in the team is positive/calm action
  14. billlie’s Siyoon’s hobbies are speaking Japanese with Haruna in her room, and diary writing
  15. billlie’s Siyoon’s special ability is making 10 hearts
  16. billlie’s Siyoon’s role models are IU and BLACKPINK’s Lisa
  17. billlie’s Siyoon’s motto is “It will work out/ I can do it
  18. billlie’s Siyoon sang Heize’s song for her audition
  19. billlie’s Siyoon has unexpected charms
  20. billlie’s Siyoon would like to live like Haruna for a day because she is cute
  21. billlie’s Siyoon cries easily
  22. billlie’s Siyoon is currently the tallest and the youngest member of Mystic Story Girls
  23. billlie’s Siyoon is friends with cube trainee Yu Gaeul due to the two of them being partners while they attended the dance academy
  24. billlie’s Siyoon looks like WekiMeki’s Kim Do-yeon according to many people
  25. billlie’s Siyoon is close to billlie’s Tsuki
  26. billlie’s Siyoon has many aegyo according to the members
  27. billlie’s Siyoon’s personality is bright and positive
  28. billlie’s Siyoon said that she is shy at first, but becomes cheerful when they get to know each other
  29. billlie’s Siyoon has large hands, big eyes, long arms and legs
  30. billlie’s Siyoon likes to play badminton and is good at it
  31. billlie’s Siyoon is a fan of Lee Hyo-jeong, a gold medalist in badminton at the Beijing Olympics
  32. billlie’s Siyoon likes green tea
  33. billlie’s Siyoon watched a lot of musicals when she was young, so she said that she want to do a musical in the future
  34. billlie’s Siyoon said that she has dreamed of becoming an idol since she was 4 years old
  35. billlie’s Siyoon said that she once served as the class president when she was in school

billie’s Siyoon: Debut

billlie's Siyoon

billlie is the K-Pop girl group that debuted under Mystic Story Entertainment. The agency has revealed this 7 members group will debut on November 10, 2021. Therefore, there are some teasers that have been revealed, such as individual members’ teasers and music video teasers.

On October 30 and 31, 2021, Mystic Story Entertainment released the first individual teaser picture for billlie’s Siyoon.

billlie's Siyoon

In the picture above, billlie’s Siyoon looks cute with a dreamy concept. She has long brown hair with short bangs. While wearing a warm turtleneck, billlie’s Siyoon was laying on the couch and supporting her chin.

billlie's Siyoon

In another teaser concept, billlie’s Siyoon was seen playing in the rain while wearing white clothes.

billlie's Siyoon

On November 10, 2021, billlie’s Siyoon looks very elegant with her outfit that matches the chic vibes. In this teaser concept, the hairstyle is changed to straight and her makeup is very on point!

On November 12, 2021, billlie held their debut stage on ‘Music Bank’ while bringing their debut single, “RING X RING”. If you watch the focus fancam above, you can see how powerful billlie’s Siyoon and other members are. She also looks very sporty while wearing a red outfit on the stage.

Do you think billlie’s Siyoon rocks her debut era?

Well, that was all for the information about billlie’s Siyoon and everything you should know about her. Please send her a lot of love and support, so her career with the group will shine even more. If you like this article, don’t forget to share it on your social media and wait for another interesting upcoming article from Channel-Korea!