Group Members

Jeong Jaehyun (NCT) Profile, Bio, & Facts

Jaehyun NCT

Jaehyun (재현) is a South Korean singer, actor, lyricist, and a member of the boy group NCT under SM Entertainment. He is a member of the NCT subunits, NCT U, NCT 127, and NCT DOJAEJUNG.

Jaehyun (NCT) Profile

Stage NameJaehyun (재현)
Birth NameJeong Yoon Oh (정윤오) || Jeong Jae Hyun
OccupationSinger, lyricist, actor
BirthdayFebruary 14, 1997
Active Years2013–present
Age27 (in 2024)
Zodiac SignAquarius
Height180 cm (5’11″)
Weight63 kg (139 lbs)
Blood TypeA

Jaehyun (NCT) Facts:

Early Life

– Jaehyun was born in Yeoksam-dong, Gangnam-gu, Seoul, South Korea.
– He went to Seoul Shindong Elementary School and Shindong Middle School.
– He went to Apgujeong High School but later transferred and graduated from Seoul Performing Arts High School in the Broadcasting Entertainment Department.
– He lived in Connecticut, USA when he was 5 to 11 years old.

Personal Life

– Jaehyun wears size 275mm.
– He has an English name, Jay.
– He claims he’s a lousy liar since lying causes his ears to get red.
– His only flaw is being too sensitive sometimes.
– According to Haechan, Jaehyun should go on “Heart Signal” with Doyoung. (MMTG)
– His hobbies include playing the piano and participating in sports.
– His body secret is shaving plenty of hair.
– He would choose Haechan to be his bias in NCT 127 because he likes his purple hair. (WIRED)
– He used to be a huge fan of Michael Jordan when he was young. (TV Guide)
– He eats a lot and often snatches food from other members.
– His shoe size is 275mm.
– He normally gets up extremely early.
– He sleeps with his blanket wrapped around him.
– His Indonesian name is “Jamal”. (detikcom)
Taeyong stated that Jaehyun has the greatest muscles of any NCT member.
– He is the member with the highest alcohol tolerance, capable of downing up to three bottles of Soju.
– The fictional characters that he resembles include Woody and Buzz from Toy Story and Moomin from Adventures from Moominvalley. (TV Guide)
– His voice is deep, warm, and mature, and stands in stark opposition to the rest of NCT’s vocal line.
– His MBTI type is ESTP alternating to ESFP.
Mark stated that Jaehyun is effective at looking after the younger members.
– The song that inspired him to become an idol was R. Kelly’s “I Believe I Can Fly”.
– His ideal type is a woman with straight, long hair who can converse well with him is nice, can rely on him, is fit, and very peaceful yet charming.
– He used to share a room with Haechan.
– He and Jungwoo share a room in the new NCT 127 dorm.
– He doesn’t care if his ideal type is older or younger than him.
– His weakness is that he is lazy and doesn’t do things he don’t like doing. (ELLE Korea)
– “To become someone big” is his motto.
– He would never swap bodies with anyone if given the chance.
– 7 is his lucky number.
– He’s an only child and doesn’t have any siblings.
– Jaehyung was not just popular in elementary school, but he was also recognized for looking after classmates who were having difficulty adjusting to school life.
– He was cast in the street in 2012, around the end of his third year of middle school, and began his training at .
Yuta said that Jaehyun’s MC style is relishing. (SOHU KOREA)
– Due to the close proximity of his house and agency in Gangnam, he preferred to stay at home during his trainee days and only moved into a dormitory following his debut.
– He has a sweet personality and a gentle manner of speaking.
– His primary school teacher suggested he run for student president, and he was elected, participating in different school activities and arranging events.
– He likes reading books and is considered a bookworm.
– He revealed that he is the only person in the accommodation who cuts and eats his own fruit.


– Jaehyun is a Vocalist, Dancer, Rapper, and Visual of NCT.
– He is the Main Vocalist for NCT 127.
– He was featured on the “Micky Mouse Show” before his debut.
– He is the sole vocalist in NCT 127 and NCT U’s Vocal line.
– He auditioned for SM as a rapper but was ultimately cast as a vocalist.
– He made his debut with NCT U in 2016 and then with NCT 127 later that year.
– He was the main role in the “6 hours later you die” movie.
– He was a member of SMRookies.
– He acted in a Kdrama “Dear M” as the main role.
– In 2020, he tied for 4th place with GOT7 ‘s Jinyoung in the ‘Handsome Male Idols Selected by Idols’ conducted annually by Daily Sports.


– Jaehyun appeared as a host/MC for the NCT’s Night Night with Johnny radio show.
– He was an MC for “Inkigayo.”
– He appeared on ‘EXO 902014’ in 2014 with rookie male members, interpreting H.O.T.’s ‘Light’ and ‘Last Game’ music videos.
– He participated in an airport game time and a segment titled ‘Merciless Close-up Coverage’ by Doyoung.
– He also was an MC for Show Champion along with Doyoung, M Countdown, and The Show.
– He made his appearance in Law of the Jungle and Idol Star Athletics Championships.
– He has appeared on the radio show Park So-hyun’s Love Game.

Magazines & Ambassador

– He is a Global Ambassador for PRADA.
– He has been on magazine covers like Vogue, Hommes, Grazia, High Cut, and ELLE.

Likes & Dislikes

– Basketball is his favorite sport.
– White, black, and light purple are his favorite colors.
– IU is his favorite artist.
– He adores Leonardo DiCaprio.
– Spring is his favorite season.
– His favorite singers are Usher, Tom Misch, D’Angelo and Justin Timberlake. (Nylon)
– He likes perfumes like Malone’s Myr & Tonka and Tom Ford’s Fabulous.
– His favorite movie genres are romance, thriller, and horror.
– He seems to enjoy games like Kart Rider, Battlegrounds, and Winning Eleven.
– He doesn’t like skinship.
– He loves listening to R&B and old pop music.(ELLE 2020)
– He enjoys collecting vinyl.
– He likes sports.

Food Preferences

– His favorite dish is meat.
– He occasionally enjoys spicy pork
– He loves peaches.
– He enjoys drinking green tea.
– He loves ice cream.
– He enjoys coffee like Americano and mango yogurt drinks.
– He also likes taro bubble tea.


– Jaehyun has many nicknames including Casper, J, Jeffrey, WooJae, Peach Boy, Jaeyuk, Valentine Boy, Choconam, Prince, master, Hunya, Jaehyunnyang, Jeong Je-yi, aehaya Jeong, cabbage, All-rounder, Prada Boy, Suit&Pot, and Jaema.


– His specialties are Rap, Piano, and playing Basketball.
– He is a skilled swimmer.
– Among NCT 127 members, he can hit the highest note. (Buzzfeed Celeb)
– He has a black belt in Taekwondo.
– He is fluent in English and Korean.

Celebrity Friends

– He is friends with DK, The8, and Mingyu from SEVENTEEN, GOT7’s Bambam & Yugyeom, BTS’s Jungkook, and Astro’s Cha Eunwoo.

Major works

– His major work, for now, is “Try Again” and “Try Again: instrumental ver”.

Instagram: _jeongjaehyun

Streaming Platform Links
Genie | Spotify | Bugs | Melon | Apple Music | Deezer

NOTE: If you know more facts, feel free to submit them in the comments section! All submissions will be greatly appreciated!


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Lilian Chen

Yo! I'm Lilian, an Ahgase and a curious wordsmith on a never-ending quest for knowledge. Don't hesitate to spot any slip-ups in my work and feel free to reach out with additional facts & insights! ^^

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