He was born on February 9, 1995 in Chicago, United States.
In January 2017, JOHNNY officially debuted as a member of NCT, in the unit NCT 127, where he was added as a new member, with the mini album NCT #127 LIMITLESS.
In early 2017, he became an MC for the second season of the show Lipstick Prince, where he replaced a fellow NCT member DOYOUNG. In March, JOHNNY, along with JAEHYUN, were announced as the new DJs for SBS Power FM new program, NCT's Night Night!.
As a featured artist Edit
- [2016.10.28] Nightmare (with Yoon Do-hyun, Reddy, G2 & INLAYER)
TV Show Edit
- 2017: Lipstick Prince (립스틱 프린스)
- 2017–2019: NCT's Night Night! (NCT의 나잇 나잇!)
Music Video Appearances Edit
Main article: JOHNNY/Gallery
- Favourite Artist: Usher
- Favorite Movie: Lion King
- Favorite Author: Malcolm Gladwell
- Favorite Dramas/Cartoons: Dragon Ball
- Favorite Sport: Soccer
- Favorite Food: Coca-cola, carbonated water, mint chocolate, Americano, chocolate ice cream, chili, watermelon, strawberry banana smoothie, burritos
- Hobbies: Joking, making people happy, dancing
- He was cast into SM Entertainment in 2007 through the SM Global Audition in Chicago.
- He can play the piano.
- He is fluent in English and Korean.
- He participated as a DJ in the SM STATION song "Nightmare," with Yoon Do-hyun, Reddy, G2 and INLAYER, as well as the song "Heartbeat" by Amber and Luna.
- He is currently the tallest member in NCT.