His songs are mostly comical, sometimes involving lyrics about sexual attraction and wishing for more popularity.

One song of his, though, centered on the Yangju highway incident in which two South Korean girls lost their lives to an American military tank, which sparked anti-American sentiment in South Korea at the time.

He is one of the better known underground rappers in South Korea due to his parallel career as an MC.

In 2011, he became the host of MBC Every1's Weekly Idol alongside entertainer and comedian Jeong Hyeong-don, a show which was extended from an original six episode special to a weekly show that continues today.

[3] Defconn left the cast in July 2014, citing that he was moving in with his brother and would no longer be living alone.