He was born on August 2, 1999 in Toronto, Canada. He moved to Vancouver, Canada at a young age.
In April 2016, MARK officially debuted as a member of NCT, in the unit NCT U, with the single "The 7th Sense". In July, he was announced to be a member of the 2nd unit, NCT 127. He also became a member of the 3rd unit, NCT DREAM, in August.
In January 2017, he joined the cast of the rapping surival show, High School Rapper. In the same year, Mark has released two digital singles under the project SM STATION - "Young & Free" with EXO's XIUMIN, and "Lemonade Love" with Jaejung Parc.
Digital Singles Edit
- 2018: Dream Me (나라는 꿈) (with JOY) [The Ghost Detective OST]
- 2017: "Drop" (두고가) (feat. SEULGI) [High School Rapper FINAL]
As a featured artist Edit
- 2016: "I Want to Enter Your Heart" (니 맘에 들어갈래) (with Henry) [Sweet Stranger and Me OST]
Songwriting Credits Edit
- "Fire Truck" (소방차) - Lyrics
- "Mad City" - Lyrics
- "Good Thing" - Lyrics
- "Baby Don't Like It (나쁜 짓)" - Lyrics, music
- "Angel" - Lyrics
- "Cherry Bomb" - Lyrics
- "Running 2 U" - Lyrics
- "0 Mile" - Lyrics
- "Whiplash" - Lyrics
- "Summer 127" - Lyrics
- "City 127" - Lyrics, music
- "Regular" - Lyrics
- "My Van" - Lyrics
- "Come Back" - Lyrics
- "Welcome To My Playground" - Lyrics
- "Chewing Gum" - Korean lyrics
- "My First and Last" - Korean lyrics
- "Trigger The Fever" - Lyrics
- "La La Love" - Lyrics
- "Walk you home" (같은 시간 같은 자리) - Lyrics
- "My Page" - Lyrics
- "JOY" - Lyrics
- "GO" - Lyrics
- "We Go Up" - Lyrics
- "Beautiful Time" - Lyrics
- "Drippin'" - Lyrics
- "Dear DREAM" - Lyrics
- "Young & Free" - Lyrics
- "Lemonade Love" - Lyrics
- "Drop" (두고가) [High School Rapper FINAL] - Lyrics
- "Black on Black" - Lyrics
TV Show Edit
- 2017: High School Rapper (고등래퍼)
- 2018: Dangerous Outside the Blanket (이불 밖은 위험해)
- 2018–2019: Show! Music Core
Main article: MARK/Gallery
- Favorite Artists: Beyoncé, Coldplay, Chris Brown
- Favorite Food: Bagels, cookies and cream ice cream, ketchup chips, chicken, kimchi, rice, watermelon, Jajangmyeon, cookies, chips, bread, chocolate
- Favorite Sports: Badminton, ice skating
- Favorite Number: 2
- Favorite Colour: Blue
- He was cast into SM Entertainment through the SM Global Audition in Vancouver.
- He looks up to EXO’s Xiumin and SHINee’s Minho.
- He is fluent in English and Korean.
- He was the leader of NCT DREAM.
- He often participates in writing the lyrics for NCT songs.
- He played the flute in Middle school
- Mark graduated from NCT DREAM in December 2018