Lee Sung-min (Hangul: 이성민; Hanja: 李晟敏; born January 1, 1986 in South Korea), more commonly credited as simply Sungmin (Hangul: 성민; Hanja: 晟敏), is a DJ and a member of K-pop boy band Super Junior. He is a regular DJ of Reckless Radio and is one of the two members in Super Junior who performs Chinese martial arts, the other being Han Geng.[1] He currently attends Seoul Institute of the Arts, majoring in Broadcasting and Television Entertainment. Lee Sung-min became a trainee under SM Entertainment after he won first place at the 1st SM Youth Best Selection Best Outward Appearance in 2001. A year later Lee, along with Lee Hyuk-jae, Kim Jun-su, Jay Kim, No Min-woo, and Kang Jung-woo who were placed in one project group, made a brief appearance in a show called Heejun vs. Kangta Battle of the Century Pop vs. Rock where Heejun and Kangta taught them techniques on singing. However, in 2003 the group was separated because Kim Jun-su, now known as Xiah Junsu, debuted as a member of TVXQ and Jay Kim, No Min-woo, and Kang Jun-woo debuted as members of The TRAX. Lee Sung-min, however, stayed with Lee Hyuk-jae and both of them debuted as members of Super Junior two years later. On August 2005, he appeared briefly in the MBC drama, "Sea of Sisters." Sungmin made an official debut on November 6, 2005 as a member of Super Junior. They performed the group's first single, "TWINS (Knock Out)" on SBS's Popular Songs. A year later Lee appeared in the SBS Banjun Theatre drama Finding Lost Time as a guest star. Two years later Sungmin replaced Kang-In as one of the key DJs of Reckless Radio and is currently hosting it with Sooyoung of Girls' Generation.