Jeong Yun-o (Hangul: 정윤오) (born Jeong Jae-hyun; Hangul: 정재현) referred to as Jaehyun (Hangul: 재현) or Jay (in English) is a South Korean singer-songwriter, actor and rapper born in Seoul on February 14, 1997. He is one of the main vocalists and lead dancers of NCT U and a main vocalist, lead dancer, and sub rapper of NCT 127.
Hobbies: Playing the Guitar,Playing the Piano, Playing Sports, Watching movies, Listening to music, Watching Videos, Reading Fashion Magazine
Shindong Elementary School (Graduated)
Shindong Middle School (Graduated)
Apgujeong High School (Transferred)
School of Performing Arts Seoul (SOPA) (Broadcasting Arts) (Graduated)
Likes: Musical movies, Pikachu, Pokemon, Charmander, thriller and horror movies,
Dislikes: Raisins, trot music, being late or tardy
Favorite Drinks: Café Americano
Instruments: Guitar, Piano
Favorite Foods: Meat, spicy pork, peach, kimchi, and green tea ice cream
Favorite Accessory: Bracelets
Favorite Season: Spring
Favorite Weather: Snowy
Favorite Aroma: Lavender
Favorite Book: Courage to be Disliked by Fumitake Koga and Ichiro Kishimi
Favorite Book Genre: Fantasy
Favorite Author: Agatha Christie
Favorite Musician: IU and Cigarettes After Sex
Favorite Music Genre: Hip-Hop
Favorite Actor: Leonardo DiCaprio
Favorite Movie: Beauty and the Beast
Favorite Movie Genre: Thriller
Favorite Variety Show: The Return of Superman
Favorite Avenger: Captain America
Favorite Sport: Basketball
Favorite Color: White and Blue
Favorite Flower: Rose
Favorite Holiday: Christmas
Ideal Type: Women with straight and long hair.
He speaks fluent English because he lived in Connecticut, USA for 4 years.
His nickname, “Casper", was given to him because of how white his face was and how he looked like a cartoon character.
Jaehyun was introduced as an SM Rookies member, along with Irene and Lami, on December 10, 2013.
He is good at studying.
When he falls asleep, he always sleeps sideways and never facing up.
He sleeps while hugging his blanket, not a pillow.
Mark says that Jaehyun is good at taking care of NCT's younger members.
He was cast into SM Entertainment when he was in eighth grade.
When he was younger, he would have a talkative personality at home, but at school he was very shy.
He spent a lot of time alone at school when he was younger.
When he was younger, he dreamed of becoming an architect.
He wants to travel around the world.
He is the member who has the best alcohol tolerance, up to three bottles of Soju.
He sets the highest bowling score in the '2019 Idol Star Athletics Championship (ISAC)' in just 3 weeks of practicing. He also impressed viewers by having six consecutive strikes and ultimately having the highest score with 243.
His bowling segment recorded the highest viewer rating on the first day of the '2019 Idol Star Athletics Championship (ISAC)', which hit up to 7.2%.
He was a radio DJ alongside Johnny in NCT Night Night (from March 20, 2017 to January 27, 2019).
He says his body secret is that he has lots of hair.
He eats a lot (and sometimes he steals other members food too).