Get To Know Boy Group 1THE9 Formed By MBC’s Survival Show ‘Under 19’

Meet The Cute Boy Group 1THE9 from MBC’s Under 19

One more group is coming from a survival variety show! After groups like Winner (from Mnet’s Who Is Next), as well as Wanna One and X1 (from Mnet’s Produce 101), boy group 1the9 (Hangul: 원더나인, stylized as 1THE9, pronounced as Wonder Nine) was born from the 2018 MBC survival competition show Under 19. All the 9 members who were able to debut with the group are Yoo Yong-ha, Kim Tae-woo, Lee Seung-hwan, Shin Ye-chan, Kim Jun-seo, Jeon Do-yum, Jung Jin-sung, Jeong Taek-hyeon, and Park Sung-won. After competing in 2018, the group finally debuted on April 13th, 2019, with the EP XIX.

So, are you curious about this new boy group in town? Well, check out this article below to find out!


1THE9 Group Profile

From November 3rd, 2018, until February 9th, 2019, MBC was airing a survival competition series titled Under 19 in which out of the initial 57 trainees from different companies, there would be 9 final members chosen by the audience voting at the end of the show who would be granted a 12-month contract. The announcement of the group’s members was released on February 9th, 2019, and it consists of 9 members: Do-yum, Jin-sung, Tae-woo, Ye-chan, Taek-hyeon, Yong-ha, Sung-won, Seung-hwan, and Jun-seo. They will be promoting under MBK Entertainment managed by PocketDol Studio.

They finally made their debut on April 13th, 2019, with the track “Spotlight.”


1THE9 Members’ Profiles and Facts


Do-yum’s Profile
  • Stage Name: Do-yum (도염)
  • Birth Name: Jeon Do-yum (전도염)
  • Position: Main Dancer, Lead Rapper, Vocalist, Center
  • Final ranking: 1
  • Date of Birth: February 21st, 2002
  • Zodiac Sign: Pisces
  • Chinese Zodiac: Horse
  • Height: 174.5 cm (5’8″)
  • Weight: 55 kg (121 lbs)
  • Blood Type: B
  • Nationality: Korean

Do-yum’s Facts

  • His original agency is Kakao M and he trained there for a year and a month
  • He’s right-handed
  • Previously, he used to be a C9 trainee
  • Jeondooyeob, Sikdoyum, and Voluptuous Doyum are his nicknames
  • His long neck is his charming point
  • Watching fantasy movies and taking a walk are his hobbies
  • He said that he resembles the white weasel
  • Galbitang (short rib soup) is his favorite food
  • White is his favorite color
  • Urban dance and acrobats are his specialties
  • Fruits, coffee, winter, big clothes, and shoes are a few of the things that he likes
  • He has a really long neck
  • “You’re charming,” “Your name is unusual,” and “You dance with a lot of feeling,” are 3 things he hears often
  • Bugs, summer, and wasabi are a few things he dislikes
  • “Epilogue: Young Forever” by BTS is his favorite song
  • He would sleep and go to the mart to eat all the food he wants if he was the last person on Earth
  • He thinks that he’s the best at neck length
  • To debut and rank 3rd place in digital charts are his dreams
  • There is a mole in the form of a heart in the center of his lower neck
  • He was ranked last in fashion among all the trainees in episode 13 of Under 19
  • During his winning speech, he mentioned that his grandmother passed away while he was filming for Under 19
  • He realized that he wanted to become a singer when he watched BTS’ “I Need U”
  • Passionate is a word that describes him well
  • “Be humble,” is his motto
  • In episode 403 of MBC’s Weekly Idol, he introduced himself as 1THE9’s main dancer
  • Sometimes, people mispronounce his name as Do-young or Do-yeon


Jin-sung’s Profile


  • Stage Name: Jin-sung (진성)
  • Birth Name: Jung Jin-sung (정진성)
  • Position: Main Vocalist, Lead Dancer, Visual
  • Final ranking: 2
  • Date of Birth: March 30th, 2002
  • Zodiac Sign: Aries
  • Chinese Zodiac: Horse
  • Height: 176.5 cm (5’9″)
  • Weight: 59 kg (129 lbs)
  • Blood Type: B
  • Nationality: Korean

Jin-sung’s Facts

  • His original agency is Kakao M and he trained there for two years and two months
  • Yeoncheon, Gyeonggi Province, South Korea is his hometown
  • TXT‘s Beomgyu and Taehyun are his close friends
  • He’s right-handed
  • Pink and black are his favorite colors
  • Beagleness, eyes, and cutie face are his charming points
  • Big eyes, Chik, Eye King, and Cold City Man are his nicknames
  • He said that he resembles a chick
  • Taking pictures, listening to music alone while taking a walk, and reading books are his hobbies
  • Chocolate and crackers are his favorite foods
  • Imitating Kim Yu-na is his specialty
  • Clothes and accessories are the things he likes
  • “You’re fun,” “Close your eyes and sleep,” and “Your eyes are pretty,” are three things he hears often
  • Injections, medicines, and pain are the things he dislikes
  • He would eat all the crackers in the world and go to all the amusement parks in the world and play there for a day if he was the last person on Earth
  • He said: “I have big eyes, and I’m the sexiest,” when he was asked about what he’s the best at
  • He goes to the bakery every morning to eat a cheese tart
  • Chet Baker’s “But Nor For Me” and “Blue Room” are his favorite songs
  • To debut, become someone’s role model, and to go overseas alone are his goals
  • He wants to be someone who shines on-stage and off-stage in the future
  • He has very big reactions to stuff and is good at aegyo
  • He prefers cats over puppies
  • He prefers rings over necklaces
  • He was ranked 6th in fashion among all the 19 trainees of Under 19 in episode 13
  • He’s a big fan of BTS
  • He mentioned that his grandfather is dead in his winning speech
  • He wants to use music to encourage people
  • Feel good cafés are his biggest interest nowadays
  • He dances and turns up the volume when he feels good
  • After debut, he wants to do a world tour concert
  • Cute, sexy, and playful are words that describe him
  • “Do your best professionally and personally,” is his motto
  • Yong-ha and Seung-hwan are his roommates
  • He introduced himself as 1THE9’s cutest, sexiest, and bubbliest member
  • He easily sheds tears
  • He’s very sentimental


Tae-woo’s Profile
  • Stage Name: Tae-woo (태우)
  • Birth Name: Kim Tae-woo (김태우)
  • Position: Vocalist, Rapper
  • Final Rank: 3
  • Date of Birth: April 23rd, 1999
  • Zodiac Sign: Taurus
  • Chinese Zodiac: Rabbit
  • Height: 174 cm (5’8.5″)
  • Weight: 62 kg (137 lbs)
  • Blood Type: O
  • Nationality: Korean

Tae-woo’s Facts

  • His original agency is A Team Entertainment
  • He’s right-handed
  • He’s really good at doing aegyo
  • Park Seo-joon Lookalike is his nickname
  • Having fun with people and playing baseball are his hobbies
  • He wanted to be an idol since he was born
  • He has broad shoulders
  • Mosuel cake\pie is his favorite food
  • Ra.D’s “Mom” is his favorite song
  • Although he’s in the vocal team, the directors were impressed by his dancing skills
  • He was ranked 8th in fashion among all the 19 trainees of Under 19 in episode 13
  • 1THE9’s sub-MC, cutest and oldest member, is how he introduced himself


Ye-chan’s Profile
  • Stage Name: Ye-chan (예찬)
  • Birth Name: Shin Ye-chan (신예찬)
  • Date of Birth: May 14th, 2001
  • Position: Main Vocalist, Lead Dancer
  • Final Rank: 4
  • Zodiac Sign: Taurus
  • Chinese Zodiac: Snake
  • Height: 183 cm (6’0″)
  • Weight: 64 kg (141 lbs)
  • Blood Type: A
  • Nationality: Korean

Ye-chan’s Facts

  • His original agency is A Team Entertainment
  • He’s right-handed
  • In Under 19, he was the tallest contestant
  • Classical Schooler is his nickname
  • Fried chicken and pizza are his favorite foods
  • Watching movies, playing football, and playing guitar are his hobbies
  • He’s not a serious person but he’s also not a fun person either
  • “You’re handsome,” “You’re earnest,” and “Your thoughts are deep,” are three things he hears often
  • Jong-hyun’s “End of a day,” Jung Seung-hwan’s “The Snowman,” and Park Hyo-shin’s “Beautiful Tomorrow,” are his favorite songs
  • He’s always teased by Jin-sung that he’s not funny
  • He was ranked 7th in fashion among all the 19 trainees on Under 19 in episode 13
  • He can play the guitar
  • “I’m Yechan who wants to entertain people with my sweet voice,” is how he introduced himself on Weekly Idol Ep. 403
  • He, along with Seung-hwan represent the ‘sweet boring line’ of the group
  • He got the nickname Boring-chan from another Under 19 contestant