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Roh Tae Hyun (노태현; formerly known as Kid Monster) is an independent South Korean singer-songwriter, rapper and musical actor. He is a former member of the boy group HOTSHOT and the project boy group JBJ.

In April 2017, he entered the idol survival show Produce 101 Season 2, alongside his fellow group member Sungwoon.

He made his solo debut on January 24, 2019 with his first mini album Birthday.


2014: Debut with HOTSHOT

He debuted as a member of HOTSHOT on October 29, 2014 with the digital single "Take a Shot".

2017-2018: Produce 101 Season 2, JBJ

He participated in the survival show Produce 101 Season 2 as a representative of Ardor & Able. However, on June 9, 2017, he was unfortunately eliminated during the third round of eliminations after finishing the competition in 25th place.

Following the end of the show, he debuted as a member of JBJ on October 18, 2017 with the release of the mini album Fantasy.

On April 30, 2018, JBJ officially disbanded following the expiration of their contracts without an extension.[1][2]

2019: Solo debut

He made his solo debut on January 24, 2019 with his first mini album Birthday.

2022: Musical theater endeavors

On March 22, 2022, Taehyun was confirmed to be a member of the musical KLIMT where he will be one of the actors playing Egon Schiele.[3] The first showing will then be on May 3.[3]


Mini albums


  • "유령을 잡아라 OST Part.3" ("Highlight") (2019)
  • "Summer Guys OST Part.1" ("Blue Eyes" with Yoon San) (2021)

Producing and writing credits

  • All credits adapted from KOMCA, unless stated.[4]
Artist Song Album Type
JBJ "Just Be Stars" New Moon Writing
Roh Tae Hyun "biRTHday" Birthday Writing
"I Wanna Know"
"Love Lock"
"Star In the Sky" Writing


Reality shows

Music video appearances

  • Rude Paper - "Fight Like The Lion" (2015)

Musical theater

  • KLIMT (2022)


  • Specialized in krumping.
  • Able to choreograph.
  • He's a member of the hip hop dance crew "Monster WOO FAM".
  • He has been using stage name Kid Monster since 2010 when he was still in Monster WOO FAM.
  • He started promoting under his birth name, Tae Hyun in 2017, when HOTSHOT came back with "Jelly".



Official links