B.D.U Members Profile and Facts:

B.D.U (BOYS DEFINE UNIVERSE) is a pre-debut boy group. The members are Bitsaeon, Seunghun, Jay Chang, and Kim Minseo. They are the finalists from Mnet’s project show, ‘Build Up: Vocal Boy Group Survivor‘. The group will be active for two years. The debut is currently unknown.

B.D.U Fandom Name:
B.D.U Fandom Colors:

Official Accounts:
Instagram: boysdefineuniverse_official
Mnet+: B.D.U

Members Profile:

Stage Name: Bitsaeon (빛새온)
Birth Name: Kim Sangyeon (김상연)
June 4th, 1995
Zodiac Sign: Gemini
Height: 181 cm (5’11”)
Blood Type: O
Group: M.O.N.T
Instagram: bitsaeon0604

Bitsaeon Facts:
– He was born in Ganghwa Island, South Korea.
– His family consists of him, his parents, and his older sister.
– Bitsaeon’s stage name means “new and strong light”.
– If he wasn’t an idol, he would have want to become a vocal teacher.
– His favorite colors are white and purple.
– His favorite animals are cats and dogs.
– Bitsaeon can play the piano and guitar. He is self-taught.
– If he could have a superpower he would choose teleportation so he could travel around the world.
– He can sing in various different languages. (EnglishHebrewSwedishNorwegianSpanish, etc.)
– His favorite food is sushi.
– He enlisted in the military on November 30th, 2020. He was discharged on May 29th, 2022.
Bitsaeon’s Ideal Type: Someone who looks cute when smiling and pretty despite whatever mood they are in.


Stage Name: Seunghun (승훈)
Birth Name: Kim Seunghun (김승훈)
English Name: Marc Kim

Birthday: February 26th, 1999
Zodiac Sign: Pisces
Height: 182 cm (5’11”)
Blood Type: AB
Nationality: Korean
Group: CIX

Seunghun Facts:
– He was born in Cheongju, North Chungcheong, South Korea.
– His family consists of him, his parents, and his younger brother.
– Seunghun is a big fan of the band, LUCY. He is also a fan of DEAN and Anne-Marie.
– He is friends with AB6IX‘s Woong and CRAVITY‘s Serim.
– A sport he really likes is football. He also seems to enjoy playing futsal.
Show more Seunghun fun facts…

Jay Chang

Stage Name: Jay Chang (제이창)
Birthday: March 8th, 2001
Zodiac Sign: Pisces
Height: 175 cm (5’9″)
Blood Type: O
Nationality: American
Instagram: jaychang63
Twitter: jchang63
YouTube: Jay Chang

Jay Chang Facts:
– Jay Chang was born in New Jersey, USA.
– His family consists of him and his parents.
– Jay Chang’s mom is Filipino-Chinese and his dad is Irish-Hungarian. (TikTok)
– His dad is his inspiration.
– He mainly listens to early 2000-2010 rock music.
– He knows how to play the drums as he used to play them for about 15 years in USA.
– His favorite season is autumn. (Instagram Live)
– His favorite colors are yellow and crimson red.
– Jay Chang is allergic to nuts.
– He is friends with AMPERS&ONE‘s Kamden.
– He made his debut as a soloist on October 17th, 2023 with the mini album, ‘LATE NIGHT‘.
Show more Jay Chang fun facts…

Kim Minseo
Stage / Birth Name: Kim Minseo (김민서)
Position: Maknae
January 11th, 2003
Zodiac Sign: Capricorn
Height: 183 cm (6’0″)
Blood Type:
Nationality: Korean
Instagram: minseo_ale

Kim Minseo Facts:
– His family consists of him, his parents, and his younger brother.
– He was a contestant on the survival show The Origin – A, B, or What?, but was eliminated in the 8th episode.
– Kim Minseo can speak Korean, Chinese, and English.
– He has spent 10 years in China when he was younger.
– Kim Minseo has attended an international school which is why he’s so fluent in English.
– He knows how to play the guitar.
– His nickname is Dinosaur.
– He is a big fan of the anime, One Piece.

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For Reference On MBTI Types:
E = Extroverted, I = Introverted
N = Intuitive, S = Observant
T = Thinking, F = Feeling
P = Perceiving, J = Judging

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Do you like B.D.U? Do you know more facts about them? Feel free to comment down below.