2012–2013: Debut with VIXX and variety show appearances N was one of ten trainees who were contestants in
Mnet's survival reality show
MyDOL and was chosen to be a part of the final line-up and the 6-member boy group
VIXX finally debuted with "
Super Hero" on May 24, 2012 on
M! Countdown. Prior to participating in
MyDOL, N was featured in
Brian Joo's "Let This Die" and
Seo In-guk's "Shake It Up" music videos. In the year 2012, after VIXX's debut, N became a cast member in the second season of
TVN's reality television show
The Romantic & Idol. In 2013 with the release of VIXX's album,
Jekyll N created the choreography to go along with title song "G.R.8.U" of the repackaged
Hyde mini-album; he also appeared in Episode 4 of
SBS's Television Drama
The Heirs alongside his group members. That same year, he choreographed other VIXX performances for their song "Light Up the Darkness" and for a special performance on the show
Dancing 9 with
Justin Timberlake's "
LoveStoned".
2014–2015: Big Byung, acting debut, MC-ing and Radio Hosting In 2014, N appeared in many variety shows as a cast member such as
Mnet's
4 Things Show,
TVN's
First Day of Work Season 3 and
MBC Every 1's
Hitmaker. In
Hitmaker, he became a member of
Jeong Hyeong-don and
Defconn's first project group, Big Byung, alongside
VIXX member
Hyuk,
Got7's
Jackson and
BtoB's
Sungjae. Going by the stage name Dol Baeki, N and the group created two singles "Stress Come On" and "Ojingeo Doenjang" (). N was cast in his first television drama in a supporting role as Noah, a bright and lively hotel employee in
MBC's romantic-melodrama
Hotel King. and appeared with
Hongbin as a cameo in
K.Will,
Mamamoo and
Wheesung's "Peppermint Chocolate" music video. In 2015, N was cast in his second television drama in a supporting role as Cha Hak-yeon in
SBS's
The Family Is Coming and also appeared on
Running Man alongside other idols, later he joined
Super Junior's
Eunhyuk and
Kangin as cast members of
MBC Every 1's ''Bachelor's Party''. On April 25, 2015, N joined
SHINee's
Minho and
Red Velvet's Yeri as MC on
MBC's
Show! Music Core from April 25, 2015, to November 14, 2015. On May 2, 2015, N's own radio show
VIXX N K-pop premiered on the radio with N as the host and fellow member
Ken as a fixed guest for the Quiz King segment (every Wednesday). N was also appearing on
Super Junior Kiss the Radio as a fixed guest hosted by
Super Junior's
Ryeowook. On July 7, 2015, N went
Off to School at
Hyundai Chungun High School in
Ulsan,
South Korea for three days as a student in
JTBC’s variety program
Off to School alongside other celebrities. Towards the end of July, N was confirmed to join the cast in
SBS's survival variety show
Law of the Jungle in Nicaragua; the show aired in September. In August 2015, N was appointed as co-MC on
Weekly Idol with
AOA's
Mina and
Apink's Ha-young. He was the MC of the show with the main MC's
Jeong Hyeong-don and
Defconn from September 2, 2015, to March 24, 2016 In September 2015, N was cast as Ha Dong-jae, a character who is brilliant yet has an oddball personality in
KBS’s drama
Cheer Up! which follows the lives of students at a prestigious boarding high school as they form a cheer-leading club.
2016–2018: Web dramas, First OST and musical theatre debut In February 2016, N was cast in his first web drama as Ahn Tae-pyung, a character who takes care of his grandmother and three siblings after his parents' death in the web drama
Tomorrow Boy which aired on
Naver TV Cast in March. In September, N participated in his first original soundtrack for a drama. N and
Melody Day's Yeoeun released the song "Without You" () for the drama
W on September 7, 2016. In the same month, N was cast alongside fellow VIXX member
Lee Hong-bin and
AOA's
Chanmi in the web drama ''What's Up With These Kids?
which will air on Naver TV Cast on November 16. In November N was cast in the musical In The Heights'' as the lead role of Benny from December 20, 2016, to February 12, 2017, at the CJ Towol Theater in Seoul Arts Center. In July 2017, it was announced that he also co-choreographed with Jane Kim for
MyTeen's debut album's Track 4 titled '꺼내가' ('Take it out).
2019–present: Military enlistment, departure from Jellyfish, and acting A few months before his enlistment N created his own channel on YouTube where he would share short clips of him dancing, touring, etc. under the title "오늘의 기록" Today's Record. On March 4, 2019, N enlisted for his military service. On October 7, 2020, N was officially discharged after having completed his military service. On October 31, 2020, N left Jellyfish Entertainment after he decided not to renew his contract and joined 51k on November 3. In 2021, N starred in the tvN drama
Mine. The same year, he played a supporting role as Oh Kyung-tae, a warm-hearted police constable in tvN drama
Bad and Crazy. ==Discography==