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 Name Jaehyun (재현)
Birth Name Jeong Yoon Oh (정윤오) || Jeong Jae Hyun
Occupation Singer, lyricist, actor
Birthday February 14, 1997
Active Years 2013–present
Age 26 years old (in 2023)
Zodiac Sign Aquarius
Height 180 cm (5’11″)
Weight 63 kg (139 lbs)
Nationality Korean
Blood Type A

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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